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产品型号NCP5006SNT1的概述

NCP5006SNT1芯片概述 NCP5006SNT1是一款由ON Semiconductor公司推出的低压差稳压器（LDO），其设计目标位于为便携式设备提供稳定的电源供应。该芯片广泛应用于移动设备、电源管理系统以及各种电子设备中，致力于提升系统的能效和稳定性。该芯片可以将高于其输出电压的输入电压有效地调整至电源所需的稳定电压，使得后续电路能够获得可靠的电源。这种能力尤其重要，在电池供电的应用场合，输入电压可能因电池电量的减少而波动。NCP5006SNT1的优良特性使其成为各种电源设计中不可或缺的一部分。芯片详细参数具体来说，NCP5006SNT1具备以下关键参数： - 输入电压范围：2.5V至6.0V - 输出电压：固定版本为3.3V；可通过外部选择电阻配置为其他值。 - 最大输出电流：最高可达500mA - 输出电压精度：±2% - 低压差特性：典型值为200mV（在500m...

产品型号NCP5006SNT1的Datasheet PDF文件预览

NCP5006

Compact Backlight LED

Boost Driver

The NCP5006 is a high efficiency boost converter operating in

current loop, based on a PFM mode, to drive White LED. The current

mode regulation allows a uniform brightness of the LEDs. The chip

has been optimized for small ceramic capacitors, capable to supply

up to 1.0 W output power.

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MARKING

DIAGRAM

Features

• 2.7 to 5.5 V Input Voltage Range

TSOP−5

SN SUFFIX

CASE 483

DCSYW

• V to 24 V Output Compliance Allows up to 5 LEDs Drive in

out

Series

• Built−in Overvoltage Protection

• Inductor Based Converter brings up to 90% Efficiency

• Constant Output Current Regulation

• 0.3 mA Standby Quiescent Current

• Includes Dimming Function (PWM)

• Enable Function Driven Directly from Low Battery Voltage Source

• Automatic LEDs Current Matching

• Thermal Shutdown Protection

DCS = Device Code

= Year

= Work Week

PIN CONNECTIONS

bat

out

• All Pins are Fully ESD Protected

• Low EMI Radiation

• Pb−Free Package is Available

GND

(Top View)

Typical Applications

• LED Display Back Light Control

• Keyboard Back Light

• High Efficiency Step Up Converter

ORDERING INFORMATION

Device

Package

Shipping†

NCP5006SNT1

TSOP−5

3000 Tape & Reel

NCP5006SNT1G

TSOP−5

(Pb−Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Semiconductor Components Industries, LLC, 2004

Publication Order Number:

July, 2004 − Rev. 0

NCP5006/D

NCP5006

bat

4.7 mF

GND

22 mH

GND

out

MBR0530

NCP5006

1.0 mF

15 W

GND

LWT67C LWT67C LWT67C LWT67C LWT67C

Figure 1. Typical Application

Thermal Shutdown

Current Sense

bat

sense

out

100 k

GND

−

GND

300 k

GND

+200 mV

Band Gap

Figure 2. Block Diagram

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NCP5006

PIN FUNCTION DESCRIPTION

Pin Name

Type

Description

out

POWER

This pin is the power side of the external inductor and must be connected to the

external Schottky diode. It provides the output current to the load. Since the boost

converter operates in a current loop mode, the output voltage can range up to

+24 V but shall not extend this limit. However, if the voltage on this pin is higher

than the Over Voltage Protection threshold (OVP) the device comes back to

shutdown mode. To restart the chip, one must either send a Low to High

sequence on Pin EN, or switch off the V supply. A capacitor must be used on

bat

the output voltage to avoid false triggering of the OVP circuit. This capacitor

should be 1.0 mF minimum. Ceramic type, (ESR <100 mW), is mandatory to

achieve the high end efficiency. This capacitor limits the noise created by the fast

transients present in this circuitry. In order to limit the inrush current and to

operate with an acceptable start−up time, it is recommended to use any value

between 1.0 mF and 8.2 mF capacitor maximum. Care must be observed to avoid

EMI through the PCB copper tracks connected to this pin.

GND

POWER

This pin is the system ground for the NCP5006 and carries both the power and

the analog signals. High quality ground must be provided to avoid spikes and/or

uncontrolled operation. Care must be observed to avoid high−density current flow

in a limited PCB copper track. Ground plane technique is recommended.

ANALOG INPUT

This pin provides the output current range adjustment by means of a sense

resistor connected to the analog control or with a PWM control. The dimming

function can be achieved by applying a PWM voltage technique to this pin (see

Figure 29). The current output tolerance depends upon the accuracy of this

resistor. Using a "5% metal film resistor or better, yields a good enough output

current accuracy.

Note: A built−in comparator switch OFF the DC/DC converter if the voltage

sensed across this pin and ground is higher than 700 mV (typical).

DIGITAL INPUT

POWER

This is an Active−High logic input which enables the boost converter. The built−in

pull down resistor disables the device when the EN pin is left open. The LED

brightness can be controlled by applying a pulse width modulated signal to the

enable pin (see Figure 31).

bat

The external voltage supply is connected to this pin. A high quality reservoir

capacitor must be connected across Pin 1 and Ground to achieve the specified

output voltage parameters. A 4.7 mF/6.3 V, low ESR capacitor must be connected

as close as possible across Pin 5 and ground Pin 2. The X5R or X7R ceramic

MURATA types are recommended. The return side of the external inductor shall

be connected to this pin. Typical application will use a 22 mH, size 1008, to handle

the 1.0 to 100 mA max output current range. On the other hand, when the desired

output current is above 20 mA, the inductor shall have an ESR < 1.5 W to achieve

a good efficiency over the V range.

bat

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NCP5006

MAXIMUM RATINGS

Rating

Symbol

Value

6.0

Unit

Power Supply

bat

Output Power Supply Voltage Compliance

out

Digital Input Voltage

Digital Input Current

−0.3 < V < V + 0.3

bat

1.0

ESD Capability (Note 1)

Human Body Model (HBM)

Machine Model (MM)

ESD

2.0

200

TSOP−5 Package

Power Dissipation @ T = +85°C (Note 2)

160

250

°C/W

Thermal Resistance, Junction−to−Air

Operating Ambient Temperature Range

Operating Junction Temperature Range

Maximum Junction Temperature

Storage Temperature Range

−25 to +85

−25 to +125

+150

°C

Jmax

stg

−65 to +150

Maximumratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values

(not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage

may occur and reliability may be affected.

1. This device series contains ESD protection and exceeds the following tests:

Human Body Model (HBM) "2.0 kV per JEDEC standard: JESD22−A114

Machine Model (MM) "200 V per JEDEC standard: JESD22−A115

2. The maximum package power dissipation limit must not be exceeded.

3. Latch−up current maximum rating: "100 mA per JEDEC standard: JESD78.

4. Moisture Sensivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A.

POWER SUPPLY SECTION (Typical values are referenced to T = +25°C, Min & Max values are referenced −25°C to +85°C ambient

temperature, unless otherwise noted.)

Rating

Symbol

Min

2.7

Typ

−

Max

5.5

−

Unit

Power Supply

bat

Output Load Voltage Compliance

out

−

Continuous DC Current in the Load @ V = 3xLED, L = 22 mH,

−

out

ESR < 1.5 W, V = 3.60 V

bat

Stand By Current, @ I = 0 mA, EN = L, V = 3.6 V

−

0.3

0.8

−

3.0

−

out

bat

stdb

Stand By Current, @ I = 0 mA, EN = L, V = 5.5 V

out

bat

Inductor Discharging Time @ V = 3.6 V, L = 22 mH, 3xLED,

Toffmax

320

bat

= 10 mA

out

Thermal Shutdown Protection

−

160

−

°C

Thermal Shutdown Protection Hysteresis

SDH

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NCP5006

ANALOG SECTION (Typical values are referenced to T = +25°C, Min & Max values are referenced −25°C to +85°C ambient

temperature, unless otherwise noted.)

Rating

Symbol

Min

Typ

Max

Unit

High Level Input Voltage

Low Level Input Voltage

1.3

−

0.4

EN Pull Down Resistor

−

170

−

100

200

100

−

230

−

Feedback Voltage Threshold

Output Current Stabilization Time Delay following a DC/DC Start−up,

@ V = 3.60 V, L = 22 mH, I = 20 mA

outdly

bat

out

Internal Switch ON Resistor @ Tamb = +25°C

−

1.7

−

DSON

5. The overall tolerance depends upon the accuracy of the external resistor.

ESD PROTECTION

The NCP5006 includes silicon devices to protect the pins

against the ESD spikes voltages. To cope with the different

ESD voltages developed in the applications, the built−in

means of a current loop, the output voltage will varies

depending upon the dynamic impedance presented by the

load.

structures have been designed to handle "2.0 kV Human

Body Model (HBM) and"200 V in Machine Model (MM)

on each pin.

Considering high intensity LED, the output voltage can

range from a low 6.40 V (two LED in series biased with a

low current), up to 21 V, the voltage compliance the chip

can sustain continuously.

The basic DC/DC structure is depicted in Figure 3. With

a 28 V maximum rating voltage capability, the power

device can accommodate high voltage source without any

leakage current downgrading.

DC/DC OPERATION

The DC/DC converter is designed to supply a constant

current to the external load, the circuit being powered from

a standard battery supply. Since the regulation is made by

bat

22 mH

sense

POR

Vds

TIME_OUT

ZERO_CROSSING

GND

RESET

LOGIC

CONTROL

GND

sense

−

V(Ipeak)

Vref

GND

Figure 3. Basic DC/DC Converter Structure

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NCP5006

Basically, the chip operates with two cycles:

error amplifier associated to the loop regulation, the

flip−flop resets, the NMOS is deactivated and the current

is dumped into the load. Since the timings depend on the

environment, the internal timer limits the toff cycle to

320 ns (typical), making sure the system operates in a

continuous mode to maximize the energy transfer.

Cycle #1: time t1, the energy is stored into the inductor

Cycle #2: time t2, the energy is dumped to the load

The POR signal sets the flip−flop and the first cycle takes

place. When the current hits the peak value, defined by the

First Start−Up

Normal Operation

Ipeak

0 mA

Ids

0 mA

Figure 4. Basic DC−DC Operation

Based on the data sheet, the current flowing into the

inductor is bounded by two limits:

• Ipeak Value: Internally fixed to 350 mA typical

• Iv Value: Limited by the fixed Toff time built in the

chip (320 ns typical)

The system operates in a continuous mode as depicted in

to avoid saturation of the core. On top of that, the ferrite

material shall be capable to operate at high frequency

(1.0 MHz) to minimize the Foucault’s losses developed

during the cycles.

The operating frequency can be derived from the

electrical parameters. Let V = Vo − V , rearranging

bat

Equation 1:

Figure 4 and t and t times can be derived from basic

equations. (Note: The equations are for theoretical analysis

only, they do not include the losses.)

dI * L

(eq. 5)

ton +

Since toff is nearly constant (according to the 320 ns

typical time), the dI is constant for a given load and

inductance value. Rearranging Equation 5 yields:

(eq. 1)

L + E *

Let V = E, then:

bat

^V*dt* L

(Ip * Iv) * L

(eq. 6)

(eq. 2)

(eq. 3)

ton +

t1 +

t2 +

bat

Let E = V , and Vopk = output peak voltage, then:

bat

(Ip * Iv) * L

Vo * V

(Vopk * V ) * dt

bat

(eq. 7)

bat

ton +

bat

Since t = 320 ns typical and Vo = 21 V maximum, then

(assuming a typical V = 3.0 V):

Finally, the operating frequency is:

bat

t2 * (Vo * V

(eq. 8)

bat)

f +

DI +

ton ) toff

The output power supplied by the NCP5006 is limited to

one watt: Figure 5 shows the maximum power that can be

delivered by the chip as a function of the output voltage.

(eq. 4)

320 ns * (21−3.0)

DImax +

+ 261 mA

22 mH

Of course, from a practical stand point, the inductor must

be sized to cope with the peak current present in the circuit

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NCP5006

P_out= f(V_bat) @ Rs = 2.0 W

I_peak= f(V_bat) @ L_out= 22 mH

1200

1000

800

400

3 LED

2 LED

350

300

4 LED

5 LED

600

250

200

400

200

out

= f(V ) @ R

= 2.0 W

bat

sense

150

bat

(V)

bat

(V)

Test conditions: L = 22 mH, R

= 10 W, Tamb = +20°C

sense

Figure 5. Maximum Output Power as a Function of

the Battery Supply Voltage

Figure 6. Typical Inductor Peak Current as a

Function of V_batVoltage

120

100

2 LED

3 LED

4 LED

5 LED

2.5

3.0

3.5

4.0

4.5

5.0

5.5

bat

(V)

Test conditions: L = 22 mH, R

= 2.0 W, Tamb = +25°C

sense

Figure 7. Maximum Output Current as a Function of V_bat

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NCP5006

Output Current Range Set−Up

The current regulation is achieved by means of an external sense resistor connected in series with the LED string.

bat

22 mH

out

CONTROLLER

GND

Figure 8. Output Current Feedback

The current flowing through the LED creates a voltage

drop across the sense resistor R1. The voltage drop is

constantly monitored internally, and maximum peak

current allowed in the inductor is set accordingly in order

to keep constant this voltage drop (and thus the current

flowing through the LED). For example, should one need

a 10 mA output current, the sense resistor should be sized

according to the following equation:

A standard 5% tolerance resistor, 22 W SMD device,

yields 9.09 mA, good enough to fulfill the back light

demand. The typical application schematic diagram is

provided in Figure 9.

Feedback Threshold

200 mV

10 mA

(eq. 9)

+ 20 W

out

bat

Pulse

bat

4.7 mF

GND

22 mH

out

GND

MBR0530

1.0 mF

NCP5006

GND

22 W

LWT67C LWT67C LWT67C LWT67C LWT67C

Figure 9. Basic Schematic Diagram

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NCP5006

Output Load Drive

The Schottky diode D1, associated with capacitor C2

(see Figure 9), provides a rectification and filtering

function.

In order to optimize the built−in Boost capabilities, one

shall operate the NCP5006 in the continuous output current

mode. Such a mode is achieved by using and external

reservoir capacitor (see Table 1) across the LED.

At this point, the peak current flowing into the LED

diodes shall be within the maximum ratings specified for

these devices. Of course, pulsed operation can be achieved,

due to the EN signal Pin 4, to force high current into the

LED when necessary.

When a pulse−operating mode is acceptable:

• A PWM mode control can be used to adjust the output

current range by means of a resistor and a capacitor

connected across FB pin. On the other hand, the

Schottky diode can be removed and replaced by at

least one LED diode, keeping in mind such LED shall

sustain the large pulsed peak current during the

operation.

TYPICAL OPERATING CHARACTERISTICS

Yield = f(V_bat) @ I_out= 4.0 mA/L_out= 22 mH

Yield = f(V_bat) @ I_out= 10 mA/L_out= 22 mH

100

4 LED/10 mA

4 LED/4 mA

5 LED/4 mA

5 LED/10 mA

2 LED/10 mA

3 LED/10 mA

3 LED/4 mA

2 LED/4 mA

2.50

3.00

3.50

4.00

(V)

4.50

5.00

5.50

2.50

3.00

3.50

4.00

(V)

4.50

5.00

5.50

bat

Figure 10. Overall Efficiency vs. Power Supply @

Figure 11. Overall Efficiency vs. Power Supply @

I_out= 4.0 mA, L = 22 mH

I_out= 10 mA, L = 22 mH

Yield = f(V_bat) @ I_out= 15 mA/L_out= 22 mH

Yield = f(V_bat) @ I_out= 20 mA/L_out= 22 mH

100

3 LED/15 mA

3 LED/20 mA

5 LED/20 mA

5 LED/15 mA

2 LED/15 mA

4 LED/15 mA

2 LED/20 mA

4 LED/20 mA

2.50

3.00

3.50

4.00

4.50

5.50

2.50

3.00

3.50

4.00

4.50

5.00

5.50

5.00

Vbat (V)

Figure 12. Overall Efficiency vs. Power Supply @

Figure 13. Overall Efficiency vs. Power Supply @

I_out= 15 mA, L = 22 mH

I_out= 20 mA, L = 22 mH

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NCP5006

Yield = f(V_bat) @ I_out= 40 mA/L_out= 22 mH

Feedback Variation vs. Temperature

100

205

204

203

202

201

200

199

198

197

2 LED/40 mA

5 LED/40 mA

4 LED/40 mA

bat

= 3.1 V thru 5.5 V

3 LED/40 mA

196

195

−40

−20

100

2.50

3.00

3.50

4.00

(V)

4.50

5.00

5.50

bat

TEMPERATURE (°C)

All curve conditions: L = 22 mH, C = 4.7 mF, C = 1.0 mF,

out

Typical curve @ T° = +25°C

Figure 15. Feedback Voltage Stability

Standby Current vs. V_bat

Figure 14. Overall Efficiency vs. Power Supply @

I_out= 40 mA, L = 22 mH

Feedback Variation vs. Nominal

(V_bat= 3.0 V, 6.0 V, T = 255C)

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

−40°C thru 125°C

bat

= 3.1 V thru 5.5 V

−1

−2

−3

−4

−5

−40

−20

100

2.7

3.3

3.9

4.5

5.1

5.5

TEMPERATURE (°C)

bat

(V)

Figure 16. Feedback Voltage Variation

Figure 17. Standby Current

OVP vs. Temperature

Frequency = f(V_bat) @ I_out= 20 mA−L_out= 22 mH

2.5

2.0

2 LED

= 3.6 V

bat

= 2.7 V

= 5.5 V

bat

1.5

1.0

0.5

3 LED

4 LED

bat

5 LED

2.5

3.0

3.5

4.0

(V)

4.5

5.0

5.5

−40 −20

100 120130

bat

TEMPERATURE (°C)

Figure 18. Typical Operating Frequency

Figure 19. Overvoltage Protection

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NCP5006

TYPICAL OPERATING WAVEFORMS

out

Inductor

Current

Conditions:V = 3.6 V, L = 22 mH, 5 LED, I = 15 mA

bat

out

Figure 20. Typical Power Up Response

out

Inductor

Current

Conditions: V = 3.6 V, L = 22 mH, 5 LED, I = 15 mA

bat

out

Figure 21. Typical Start−Up Inductor Current and Output Voltage

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NCP5006

TYPICAL OPERATING WAVEFORMS

Inductor

Current

Conditions:V = 3.6 V, L = 22 mH, 5 LED, I = 15 mA

bat

out

Figure 22. Typical Inductor Current

out

Ripple

50 mV/div

Inductor

Current

Conditions: V = 3.6 V, L = 22 mH, 5 LED, I = 15 mA

bat

out

Figure 23. Typical Output Voltage Ripple

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NCP5006

TYPICAL OPERATING WAVEFORMS

Output Voltage

Inductor Current

Test Conditions: L = 22 mH, I = 15 mA, V = 3.6 V, Ambient Temperature

out

bat

Figure 24. Typical Output Peak Voltage

92.00

90.00

88.00

86.00

84.00

82.00

80.00

78.00

ESR = 0.3 W

ESR = 1.3 W

3.5

4.5

5.5

bat

(V)

NCP5006: Efficiency = f(ESR) @ 5 LED, ILed = 20 mA

Figure 25. Efficiency as a Function of V_batand Inductor ESR

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NCP5006

10.00

1.00

0.10

0.01

0.1

100

1000

FREQUENCY (MHz)

Figure 26. Noise Returned to the Battery

Test Conditions: V = 3.6 V, I = 20 mA, string of 3 LED (OSRAM LWT67C)

bat

out

Figure 27. Relative EMI Over 100 kHz − 30 MHz Bandwidth

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NCP5006

TYPICAL APPLICATIONS CIRCUITS

Standard Feedback

The standard feedback provides a constant current to the

LED, independently of the V supply and number of LED

associated in series. Figure 28 depicts a typical application

to supply 13 mA to the load.

bat

4.7 mF

22 mH

GND

out

MBR0530

NCP5006

1.0 mF

GND

15 W

LWT67C LWT67C LWT67C LWT67C LWT67C

Figure 28. Basic DC Current Mode Operation with Analog Feedback

PWM Operation

start and stop the converter, yielding high transients . These

transients might generate spikes difficult to filter out in the

rest of the application, a situation not recommended. The

output current depends upon the duty cycle of the signal

presented to the node Pin 3: this is very similar to the digital

control discussed in Figure 31.

The average mode yields a noise free operation since the

converter operates continuously, together with a very good

dimming function. The cost is an extra resistor and one

extra capacitor, both being low cost parts.

The analog feedback Pin 3 provides a way to dim the

LED by means of an external PWM signal as depicted in

Figure 29. By optimizing the internal high impedance

presented by the FB pin, one can set up a simple R/C

network to accommodate such a dimming function. Two

modes of operation can be considered:

• Pulsed mode, with no filtering

• Averaged mode with filtering capacitor

Although the pulsed mode will provide a good dimming

function, from a human eye standpoint, it will continuously

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NCP5006

bat

4.7 mF

22 mH

Average Network

GND

out

PWM

MBR0530

10 k

150 k

NCP5006

1.0 mF

100 nF

5.6 k

GND

10 W

LWT67C LWT67C LWT67C LWT67C LWT67C

Sense Resistor

NOTE: RC filter R2 and C3 is optional (see text)

Figure 29. Basic DC Current Mode Operation with PWM Control

To implement such a function, let consider the feedback

input as an operational amplifier with a high impedance

input (reference schematic Figure 29). The analog loop

will keep going to balance the current flowing through the

sense resistor R1 until the feedback voltage is 200 mV. An

extra resistor (R4) isolates the FB node from low resistance

to ground, making possible to add an external voltage to

this pin.

The time constant R2/C3 generates the voltage across C3,

added to the node Pin 1, while R2/R3/R4/R1/C3 create the

discharge time constant. In order to minimize the pick up

noise at FB node, the resistors shall have relative medium

value, preferably well below 1.0 MW. Consequently, let R2 =

150 k, R3 = 10 k and R4 = 5.6 k. On the other hand, the

feedback delay to control the luminosity of the LED shall be

acceptable by the user, 10 ms or less being a good

compromise. The time constant can now be calculated based

on a 400 mV offset voltage at the C3/R2/R3 node to force

zero current to the LED. Assuming the PWM signal comes

from a standard gate powered by a 3.0 V supply, running at

10 kHz, then a full dimming of the LED can be achieved with

a 95% span of the Duty Cycle signal. Figure 30 depicts the

behavior under such PWM analog mode.

PWM

VFB

VPWM

Figure 30. Operation with Analog PWM, f = 10 kHz, DC = 25%

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NCP5006

Digital Control

Cycle, but care must be observed as the DC/DC converter

is continuously pulsed ON/OFF and noise are likely to be

generated.

Due to the EN pin, a digitally controlled luminosity can

be implemented by providing a PWM signal to this pin (see

Figure 31). The output current depends upon the Duty

bat

Pulse

bat

4.7 mF

22 mH

GND

out

MBR0530

NCP5006

1.0 mF

22 W

GND

LWT67C LWT67C LWT67C LWT67C LWT67C

NOTE: Pulse width and frequency depends upon the application constraints.

Figure 31. Typical Semi−Pulsed Mode of Operation

The PWM operation, using the EN pin as a digital

control, is depicted in Figures 32 and 33. The tests have

been carried out at room temperature with V = 3.60 V,

L = 22 mH, five LEDs in series, RFB = 22 W.

bat

PWM

out

VFB

VPWM

Figure 32. Operation @ PWM = 10 kHz, DC = 10%

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NCP5006

PWM

out

VFB

PWR CLK

Figure 33. Operation @ PWM = 10 kHz, DC = 25%

PWM

out

PWR CLK

Figure 34. Magnified View of Operation @ PWM = 10 kHz, DC = 25%

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NCP5006

NCP5006 I = f(PWM) @ f = 10 kHz

out

10.00

9.00

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

Digital EN

Analog PWM

DC (%)

100

120

Figure 35. Output Current as a Function of the Operating Condition

Table 1. Recommended Passive Parts

Part

Manufacturer

MURATA

CoilCraft

WURTH

TDK

Description

GRM42 − X7R

GRM42 – X5R

GRM40 – X5R

1008PS − Shielded

Power Wafer

Part Number

GRM42−6X7R−105K16

GRM

Ceramic Capacitor 1.0 mF/16 V

Ceramic Capacitor 1.0 mF/25 V

Ceramic Capacitor 4.7 mF/6.3 V

Inductor 22 mH

GRM40−X5R−475K6.3

1008PS−223MC

LPQ4812−223KXC

744031220

Inductor 22 mH

Power Choke

Inductor 22 mH

Power Inductor

VLP4614T−220MR40

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NCP5006

Typical LEDs Load Mapping

Since the output power is voltage battery limited (see

Figure 5), one shall arrange the LED to cope with a specific

need. In particular, since the power cannot extend 600 mW

under realistic battery supply, powering ten LED can be

achieved by a series/parallel combination as depicted in

Figure 36.

50 mA

75 mA

Load

LED

D10

LED

Sense

Resistor

2.7 W

LED

GND

60 mA

Load

Sense

LED

D10

LED

D13

LED

3.9 W

Resistor

GND

LED

D11

LED

D14

LED

D12

LED

D15

LED

Test conditions:

= 3.6 V

= 22 mH

= 1.0 mF

bat

out

Sense

Resistor

3.3 W

GND

Figure 36. Examples of Possible LED Arrangements

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NCP5006

GND

MMBF0201NLT1

4.7 mF/

16 V

4.7 mF/

16 V

D10

D11

3.3 R

LWT67C LWT67C LWT67C

GND

TP?

out

D12

51 R

MMBF0201NLT1

LWT67C LWT67C LWT67C LWT67C LWT67C

U4A

M54HC123

TP1

VFB

NLAS4599

Adjust Flash Pulse Width

out

GND

10 k

500 kA

1.0 mF/

bat

10 V

GND

NCP5006

GND

1.0 nF

10 mF/

10 V

GND

100 nF

100 kA

10 k

4.7 mF/

1.5 k

16 V

GND

100 k

GND

TRIG

GND

ENABLE

bat

Figure 37. NCP5006 Demo Board Schematic Diagram

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NCP5006

Figure 38. NCP5006 Demo Board PCB: Top Layer

Figure 39. NCP5006 Demo Board PCB: Bottom Layer

Figure 40. NCP5006 Demo Board Top Silkscreen

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NCP5006

FIGURES INDEX

Figure 1: Typical Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Figure 2: Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Figure 3: Basic DC/DC Converter Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 4: Basic DC/DC Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 5: Maximum Output Power as a Function of the Battery Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 6: Typical Inductor Peak Current as a Function of V Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

bat

Figure 7: Maximum Output Current as a Function of V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

bat

Figure 8: Output Current Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 9: Basic Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 10: Overall Efficiency vs. Power Supply @ I = 4.0 mA, L = 22 mH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

out

Figure 11: Overall Efficiency vs. Power Supply @ I = 10 mA, L = 22 mH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

out

Figure 12: Overall Efficiency vs. Power Supply @ I = 15 mA, L = 22 mH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

out

Figure 13: Overall Efficiency vs. Power Supply @ I = 20 mA, L = 22 mH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

out

Figure 14: Overall Efficiency vs. Power Supply @ I = 40 mA, L = 22 mH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

out

Figure 15: Feedback Voltage Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 16: Feedback Voltage Variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 17: Standby Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 18: Typical Operating Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 19: Overvoltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 20: Typical Power Up Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 21: Typical Start−Up Inductor Current and Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 22: Typical Inductor Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 23: Typical Output Voltage Ripple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 24: Typical Output Peak Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 25: Efficiency as a Function of V and Inductor ESR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

bat

Figure 26: Noise Returned to the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 27: Relative EMI Over 100 kHz−30 MHz Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 28: Basic DC Current Mode Operation with Analog Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 29: Basic DC Current Mode Operation with PWM Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 30: Operation with Analog PWM, f = 10 kHz, DC = 25% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 31: Typical Semi−Pulsed Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 32: Operation @ PWM = 10 kHz, DC = 10% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 33: Operation @ PWM = 10 kHz, DC = 25% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 34: Magnified View of Operation @ PWM = 10 kHz, DC = 25% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 35: Output Current as a Function of the Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 36: Examples of Possible LED Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 37: NCP5006 Demo Board Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 38: NCP5006 Demo Board PCB: Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 39: NCP5006 Demo Board PCB: Bottom Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 40: NCP5006 Demo Board Top Silkscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

NOTE CAPTIONS INDEX

Note 1:

Note 2:

Note 3:

Note 4:

Note 5:

This device series contains ESD protection and exceeds the following tests . . . . . . . . . . . . . . . . . . . . . . . . . 4

The maximum package power dissipation limit must not be exceeded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Latch−up current maximum rating: "100 mA per JEDEC standard: JESD78 . . . . . . . . . . . . . . . . . . . . . . . . 4

Moisture Sensivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A . . . . . . . . . . . . . . . . . . . . . . . . 4

The overall tolerance depends upon the accuracy of the external resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ABBREVIATIONS

Enable

Feed Back

POR

Power On Reset: Internal pulse to reset the chip when the power supply is applied

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NCP5006

PACKAGE DIMENSIONS

TSOP−5

SN SUFFIX

CASE 483−02

ISSUE C

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. MAXIMUM LEAD THICKNESS INCLUDES

LEAD FINISH THICKNESS. MINIMUM LEAD

THICKNESS IS THE MINIMUM THICKNESS

OF BASE MATERIAL.

4. A AND B DIMENSIONS DO NOT INCLUDE

MOLD FLASH, PROTRUSIONS, OR GATE

BURRS.

MILLIMETERS

DIM MIN MAX

INCHES

MIN MAX

2.90

1.30

0.90

0.25

0.85

3.10 0.1142 0.1220

1.70 0.0512 0.0669

1.10 0.0354 0.0433

0.50 0.0098 0.0197

1.05 0.0335 0.0413

0.013 0.100 0.0005 0.0040

0.05 (0.002)

0.10

0.20

1.25

0.26 0.0040 0.0102

0.60 0.0079 0.0236

1.55 0.0493 0.0610

2.50

3.00 0.0985 0.1181

SOLDERING FOOTPRINT*

1.9

0.074

0.95

0.037

2.4

0.094

1.0

0.039

0.7

0.028

inches

SCALE 10:1

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and

MountingTechniques Reference Manual, SOLDERRM/D.

ON Semiconductor and

are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice

to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any

liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental

damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over

time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under

its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body,

or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death

may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees,

subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of

personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part.

SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

PUBLICATION ORDERING INFORMATION

LITERATURE FULFILLMENT:

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada

ON Semiconductor Website: http://onsemi.com

Order Literature: http://www.onsemi.com/litorder

Literature Distribution Center for ON Semiconductor

P.O. Box 61312, Phoenix, Arizona 85082−1312 USA

Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada

Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada

Email: orderlit@onsemi.com

Japan: ON Semiconductor, Japan Customer Focus Center

2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051

Phone: 81−3−5773−3850

For additional information, please contact your

local Sales Representative.

NCP5006/D

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NCP5006SNT1产品参数

型号:	NCP5006SNT1
是否Rohs认证：	不符合
生命周期：	Obsolete
IHS 制造商：	ON SEMICONDUCTOR
零件包装代码：	TSOP
包装说明：	TSOP-5
针数：	5
Reach Compliance Code：	not_compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	5.39
Is Samacsys：	N
接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	R-PDSO-G5
JESD-609代码：	e0
长度：	3 mm
复用显示功能：	NO
功能数量：	1
区段数：	1
端子数量：	5
最高工作温度：	85 °C
最低工作温度：	-25 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP
封装等效代码：	TSOP5/6,.11,37
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	240
电源：	3/5 V
认证状态：	Not Qualified
座面最大高度：	1.1 mm
子类别：	Display Drivers
最大供电电压：	5.5 V
最小供电电压：	2.7 V
标称供电电压：	3.6 V
表面贴装：	YES
温度等级：	OTHER
端子面层：	Tin/Lead (Sn80Pb20)
端子形式：	GULL WING
端子节距：	0.95 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	30
宽度：	1.5 mm
Base Number Matches：	1

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