YB1230ST89原理图各脚功能电路原理芯片引脚定义引脚图及功能-中国IC网-芯三七

YB1230 – 600mA

Low-Noise LDO Regulator

Description

Features

2.0% Accuracy Output Voltage

Output Voltage range 1.8V~3.1V

Low-Noise Low-Drop-Out

Stable with 2.2μF Ceramic Capacitor

for Any Load

Typical Output Current : 600 mA

Low Quiescent Current : ~90μA

500mV Dropout at 600mA Load (3.1V)

Only Need Input and Output Capacitors

Power Saving Shutdown Mode (<1μA)

Thermal Protection Shutdown

Built-In Internal Soft-Start

The YB1230 is a series of low-noise, low

dropout (LDO) linear regulators with 2.0%

output voltage accuracy. The YB1230

regulators achieve a low 500mV dropout at

600mA load current of 3.1V output and are

available in voltages ranging from 1.8V to

3.1 V with 0.1 V per step (custom voltage is

considerable at request).

The YB1230 regulators are optimized to

work with low-ESR and low cost ceramic

capacitors, reducing the amount of board

space critical in hand-held devices. The

YB1230 requires only 2.2 μF output

capacitor for stability with any load and

consumes less than 1μA in shutdown

mode.

Output Short-circuit Current Limit

Protection

Green package (RoHS) available

Applications

PDA, Palmtops and Notebook

Computers

Built-in thermal shutdown and short-circuit

protect offer secure protection against fault

operation. The YB1230 regulators are

available in SOT-23 / SOT-25 / SOT-89

packages.

DSC, Handset Camera Modules

PCMCIA Cards, PC Cameras

USB Based Portable Devices (MP3, PMP)

GSM/GPRS/3G RF Transceiver

Modules

Wireless LANs

Bluetooth Portable Radios

Typical Application Circuitry

YB1230 MRev 1.4

www.yobon.com.tw

1

YB1230 – 600mA

Low-Noise LDO Regulator

Pin Configuration

Pin Description

Table 1

Pin Name

Pin Function

VIN

GND

EN

Unregulated Input Supply. Bypass with a capacitor to GND.

Ground pin.

Pull high to enable the regulator.

VOUT

Regulated Output Voltage. Bypass with a capacitor to GND.

Ordering Information

Marking Information

YB1230 MRev 1.4

www.yobon.com.tw

2

YB1230 – 600mA

Low-Noise LDO Regulator

Absolute Maximum Ratings

Recommended Operating Conditions

Supply Voltage........................................-0.3V to 7.0V Input Supply Voltage................................ 2V to 6.0V

Operating Temperature..................... -40℃ to +85℃

Thermal Resistance (SOT-23/25, θ_JC) ........140℃/W

Thermal Resistance (SOT-23/25, θ_JA).........280℃/W

Thermal Resistance (SOT-89, θ_JC) ...............46℃/W

Thermal Resistance (SOT-89, θ_JA)..............180℃/W

Thermal Power Dissipation (SOT-23/25, P_D)....0.4W

Thermal Power Dissipation (SOT-89, P_D).......0.55W

Output Voltage...............................-0.3V to (V_IN+0.3V)

Output Short-Circuit Duration ........................... Infinite

Junction Temperature Range........................... +150℃

Storage Temperature Range ............. -65℃ to +150℃

Lead Temperature............................................ +250℃

Electrical Characteristics

T_A= 25℃, V_IN= ( V_OUT+ 1 V ), C_IN= C_{OU T}= 2.2μF, V_EN= V_IN

Table 2

Function Parameter

Conditions

Min

Typ

Max

Units

Input Voltage Range

Output Voltage

2.0

1.8

6.0

3.1

V

Predefined

Output Voltage Accuracy

Output Current Limit

I_OUT= 10mA

-2.0

+2.0

%

Short-circuit output

380

500

520

600

750

850

90

mA

Vout = 3.2V, Iout = 600 mA

Vout = 3.0V, Iout = 600 mA

Vout = 2.5V, Iout = 600 mA

Vout = 2.0V, Iout = 600 mA

Vout = 1.8V, Iout = 600 mA

Iground = Iin - Iout

Dropout Voltage (Note 1)

mV

μA

%/V

%

Ground Current

150

Line Regulation

Vin = (Vout + 1V) to 6V, Iout = 10 mA

Iout = 1mA to 600 mA

EN = 0.4V

0.3

2

Load Regulation

μA

Shutdown Supply Current

0.01

56

f = 100 Hz, Iout = 10 mA

f = 1KHz, Iout = 10 mA

f = 10 KHz, Iout = 10 mA

Vout = 2.8V, Rload = 9 ohm

Vin = 2.0V to 6.0V

Ripple Rejection (PSRR)

dB

56

45

μS

V

Shutdown Exit Delay (Note 2)

EN Logic Low Level

40

100

0.4

EN Logic High Level

Vin = 2.0V to 6.0 V

1.5

Vin

V

μA

°C

EN Input Bias Current

Thermal Shutdown

Vin = EN = Vout + 1V

Shutdown Temperature

V_OUT= 1.8V, I_OUT= 100mA

0.01

160

20

°C

Thermal Shutdown Hysteresis

Note1 : The drop out voltage varies depending on output voltage selection

Dropout is defined as V_IN– V_OUTwhen V_OUTis 100mV below V_OUTwhere Vin=Vout + 1V for nominal V_OUT

.

Note 2: Time needed for V_OUTto reach 90% of final value.

YB1230 MRev 1.4

www.yobon.com.tw

3

YB1230 – 600mA

Low-Noise LDO Regulator

Typical Characteristics

At T_A=25℃, V_IN=(V_OUT+1V), C_IN=C_OUT=2.2μF, V_EN=V_IN, unless otherwise noted.

Dropout Voltage vs Output Voltage

Dropout Voltage vs. Load Current

1000

800

600

400

200

0

800

600

400

200

0

1.8V

2.8V

10

100

200

300

400

500

600

1.8

2.1

2.3

2.5

2.8

3

3.3

Load Current (mA)

Output Voltage (V)

Ground Current vs. Input Voltage

Dropout Voltage vs. Temperature

140

700

120

100

80

60

40

20

0

600

500

400

300

200

100

0

2.8V at 25 C

2.8V at 85 C

1.8V

2.8V

10

100

200

300

400

500

600

2.5

3

3.5

4

4.5

5

5.5

6

Load Current (mA)

Input Voltage (V)

YB1230 MRev 1.4

www.yobon.com.tw

4

YB1230 – 600mA

Low-Noise LDO Regulator

Output Voltage vs. Temperature

2.84

2.835

2.83

2.825

2.82

2.815

2.81

2.8V at 10 mA load

2.805

2.8

2.795

25

35

45

55

65

75

85

Temperature (C)

YB1230 MRev 1.4

www.yobon.com.tw

5

YB1230 – 600mA

Low-Noise LDO Regulator

Functional Block Diagram

IN

SHUTDOWN AND

POWER-ON CONTROL

EN

ERROR

AMP

MOS DRIVER

WITH _LIMIT

P

OUT

THERMAL

SENSOR

REFERENCE

AND NOISE BYPASS

GND

Figure 3. Block Diagram

Functional Description

The YB1230 is an low-noise, low-quiescent

current, low-dropout linear regulator. It is

supplied in a SOT-23 / SOT-25 / SOT-89

package for different applications. These

devices can supply loads up to 600mA. As

shown in the Functional Block Diagram, the

YB1230 consists of a reference and noise

bypass circuit, error amplifier, output drive

transistor, internal feedback voltage divider,

thermal sensor, and short circuit current

limiter. The internal reference is connected

to the error amplifier’s inverting input. The

error amplifier compares this reference with

the feedback voltage and amplifies the

difference. If the feedback voltage is lower

transistor gate is pulled high, allowing less

current to pass to the output. The parts are

available with preset output voltages

ranging from 1.8V to 3.1V.

Stability

The YB1230 is a high performance LDO

emphasizing stability with low output

capacitance. It is able to maintain stability

with an output capacitor as low as 2.2 uF.

The output capacitor can also be increased

to optimize performance. The YB1230 will

remain stable and in regulation with no load,

unlike many other voltage regulators.

Internal P-Channel Pass Transistor

than

the

reference

voltage,

the

pass-transistor gate is pulled low. This

allows more current to pass to the output

and increases the output voltage. If the

feedback voltage is too high, the pass

The YB1230 features a low impedance

P-channel MOSFET pass transistor. This

provides several advantages over similar

designs using a PNP pass transistor,

YB1230 MRev 1.4

www.yobon.com.tw

6

YB1230 – 600mA

Low-Noise LDO Regulator

including low operating power and longer

battery life. The YB1230 consumes only

90µA of quiescent current under most

conditions.

charged with a reduced output current.

Shortly after the initial power up, the

soft-start feature is terminated and normal

operation is resumed.

Output Short-Circuit Current Limit

Application Information

The YB1230 includes a current limiter,

which monitors and controls the pass

transistor’s gate voltage, limiting the output

current to about 380mA, for example, in a

short-circuit output situation.

Enable/Shutdown

The YB1230 comes with an active-high

enable pin that allows the regulator to be

enabled. Forcing the enable pin low

disables the regulator and puts it into the

shutdown mode. This pin cannot be left

floating as it may cause an undetermined

state.

Shutdown

The YB1230 also features a low-power

active shutdown mode. It has a switch that

turns off the device when disabled. This

allows the output capacitor and load to

discharge and de-energize the load. In the

shutdown mode, the internal functional

blocks, such as voltage reference and the

error amplifier, are turned off completely,

and the quiescent current is less than 1µA.

Input/Output Capacitor

It is recommended to use a 2.2µF capacitor

on the YB1230 input and a 2.2µF capacitor

on the output. For high regulation

performance, larger input capacitor values

and lower ESRs provide better noise

rejection and line-transient response. The

output noise, load-transient response,

stability, and power-supply rejection can be

improved by using large output capacitors.

Low ESR ceramic capacitors provide

optimal performance and save space.

Thermal Protection Shutdown

The thermal protection shutdown function

protects the device from operating in over

temperature condition. When the junction

temperature exceeds +160°C, the thermal

sensor signals the shutdown logic, turning

off the pass transistor and allowing the IC

to cool down. The thermal sensor turns the

pass transistor on again after the IC’s

junction temperature drops to +140°C.

Soft-Start Circuitry

The YB1230 includes a soft-start circuitry to

limit inrush current at turn-on. During power

up, the output capacitor and output load are

YB1230 MRev 1.4

www.yobon.com.tw

7

YB1230 – 600mA

Low-Noise LDO Regulator

SOT-25 Package Information

YB1230 MRev 1.4

www.yobon.com.tw

8

YB1230 – 600mA

Low-Noise LDO Regulator

SOT-23 Package Information

NOTE:

1. ALL DIMENSIONS ARE IN MILLIMETERS.

2. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURRS SHALL NOT

EXCEED 0.25mm PER END.

DIMENSION E1 DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD

FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 PER SIDE.

3. THE PACKAGE TOP MAY BE SMALLER THAN THE PACKAGE

BOTTOM.

DIMENSIONS D AND E1 ARE DETERMINED AT THE OUTERMOST EXTREMES OF THE

PLASTIC BODY EXCLUSIVE OF MOLD FLASH, THE BAR BURRS. GATE BURRS AND

INTERLEAD FLASH, BUT INCLUDING ANY MISMATCH BETEEN THE TOP AND BOTTOM OF

THE PLASTIC BODY..

4. DIMENSION“b”DOES NOT INCLUDE DAMBAR PROTRUSION.

ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08mm

TOTAL IN EXCESS OF THE “b”DIMENSION AT MAXIMUM

MATERIAL CONDITION. THE DAMBAR CANNOT BE LOCATED

ON THE LOWER RADIUS OF THE FOOT . MINMUM SPACE BETWEEN

PROTRUSION AND AN ADJACENT LEAD SHALL NOT BE LESS

THAN 0.07mm

5. LEAD FRAME MATERIAL:EFTEC 64T

YB1230 MRev 1.4

www.yobon.com.tw

9

YB1230 – 600mA

Low-Noise LDO Regulator

SOT-89 Package Information

YB1230 MRev 1.4

www.yobon.com.tw

10

电子百科

产品导航

产品型号YB1230ST89X180的Datasheet PDF文件预览

YB1230ST89相关产品

YB1230ST89相关文章

IC37:专业IC行业平台