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YB1300

Regulated Charge Pump 5V 100mA

Description

Features

The YB1300 is a switched capacitor DC/DC

step up converter that produces a regulated

5V output. The input voltage range is from

2.7V to 5.0V that makes the YB1300 ideally

for a single cell Li-Ion battery source.

Switched-Capacitor Step-Up

Operation

Input Range : 2.7V to 5.0V

Output Voltage : 5V

Output Current : 2.7V≦VIN＜3.2V,

I

OUT≦30mA

The YB1300 works well for step-up applica-

tions without the need for an inductor. The

1MHz switching frequency allows the use

of small SMD capacitors. The YB1300

provides thermal protection, short-circuit

current limit protection. In order to prevent

in-rush current effectively, it provides

automatic soft-start. The quiescent current

is 30µA without load and its shutdown

current is less than 0.1µA. The YB1300 is

available in a 6-pin SOT23 package.

Output Current :3.2V≦VIN＜5V,

I

OUT≦100mA

Shutdown Mode

Low Quiescent Current : ~30µA

1MHz Internal Oscillator

Thermal Protection Shutdown

Output Short-circuit Current Limit

Protection

Automatic Soft-Start Reduces

In-Rush Current

SOT23-6 Package

Applications

Cellular Phones

White LED Drivers

Smart Card Reader

PCMCIA Cards

Li-Ion Battery Backup Supplies

Typical Application Circuit

YB1300

5

1

VIN

VOUT

1-Cell

Li-Ion-Battery

R

3

2

6

4

EN

CP

CIN

2.2uF

C_OUT

2.2uF

C_PUMP

0.22uF

GND

CN

Figure 1. Typical application circuit

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YB1300 MRev.1.2

1

YB1300

Regulated Charge Pump 5V 100mA

Pin Configuration

SOT23-6

TOP VIEW

VOUT 1

GND 2

EN 3

6 CP

5 VIN

4 CN

Figure 2. Pin configuration

Pin Description

Table 1

1

Name

V_OUT

GND

EN

Description

Regulated output voltage. VOUT should be bypassed with a low ESR capacitor for the

best performance.

2

Ground pin.

3

3V or above will turn on the IC. Below 0.4V will put the chip in the shutdown mode.

Pumping capacitor negative terminal.

4

CN

5

V_IN

Input supply voltage. V_INshould be bypassed with a 2.2µF low ESR capacitor.

Pumping capacitor positive terminal.

6

CP

Ordering Information

Order Number

YB1300

Package Type

SOT23-6

Supplied as

Package Marking

Y13C

3000 units Tape & Reel

YB1300 MRev.1.2

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2

YB1300

Regulated Charge Pump 5V 100mA

Absolute Maximum Ratings

Recommended Operating

Conditions

Supply Voltage......................................................5.5V

Output Voltage......................................................5.5V Input Supply Voltage................................... 2V to 5V

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

Output Short-Circuit Duration ....................Continuous

Junction Temperature Range........................... +125℃

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

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

Electrical Characteristics

At T_A=25℃, V_IN=3.2V, I_OUT=10mA, C_IN=C_OUT=2.2µF, C_PUMP=0.22µF, V_ENABLE=V_IN, unless otherwise noted.

Table 2

Symbol

Function Parameter

Input Voltage

Test Conditions

Min

Typ

Max Units

V_IN

2.7

4.7

5.0

5.3

V

2.7V≦V_IN＜3.2V, I_OUT≦30mA

3.2V≦V_IN＜5V, I_OUT≦100mA

V_IN=3V

5.0

100

210

1

V_OUT

Output Voltage

V

I_OUT

I_SC

Output Current

mA

MHz

%

Output Current (short-circuit) V_IN=3.2V

Oscillator Frequency

F_OSC

η

Efficiency

I_OUT=20mA, V_IN=2.7V

88

V_R

Ripple Voltage

V_IN=3.0V, I_OUT=100mA

Vin=3.3V to 5.0V

50

mVpp

V

V_IH

V_IL

Enable Control (High)

Enable Control (Low)

Thermal Shutdown

Thermal Recovery

Supply Current (Quiescent)

3

V_IN

0.4

Vin=3.3V to 5.0V

-0.2

V

℃

T_ST

T_RT

I_QC

Shutdown Temperature

Recovery Temperature

I_OUT=0mA

~160

~140

~30

~0.0

1

℃

µA

I_SD

Supply Current (Shutdown)

V_IN=2.7-5.0V, Enable=0V

µA

Note:

YB1300 MRev.1.2

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3

YB1300

Regulated Charge Pump 5V 100mA

Typical Characteristics

At T_A=25℃, V_IN=3.2V, I_OUT=10mA, C_IN=C_OUT=2.2µF, C_PUMP=0.22µF, V_ENABLE=V_IN, unless otherwise noted.

5

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

220

200

180

160

140

120

100

V_IN=3.6V

V_IN=4.2V

V_IN=3.4V

V_IN=3.0V

T_A=25℃

C_PUMP=0.22µF

C_OUT=2.2µF

V_IN=2.7V

0

20

40

60

80

100

120

2.5

3

3.5

4

4.5

5

5.5

Output Current (mA)

Supply Voltage (V)

Fig3. Load Regulation

Fig6. Short-Circuit Current vs. Supply Voltage

100

90

80

70

60

50

40

30

V_IN=2.7V

V_IN=3.0V

V_IN=3.4V

V_OUT

V_IN=3.6V

C_N

V_IN=4.2V

T_A=25℃

C_PUMP=0.22µF

C_OUT=2.2µF

1

10

100

Output Current (mA)

Fig7. Output Ripple

V_IN=3.6V, I_OUT=60mA, C_OUT=2.2µF, C_PUMP=0.22µF

Fig4. Efficiency

100

80

60

40

20

0

T_A=25℃

C_PUMP=0.22µF

V_IN=3.4V

C_OUT=2.2µF

V_IN=4.2V

V_IN=3.0V

V_IN=2.7V

V_IN=3.6V

0

20

40

60

80

100

120

Load Current (mA)

Fig8. Start-Up Time and In-Rush Current

V_IN=3.0V, I_OUT=0mA, C_OUT=2.2µF

Fig5. Output Current vs. Output Ripple

YB1300 MRev.1.2

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4

YB1300

Regulated Charge Pump 5V 100mA

Functional Block

Cpump

C^N

CP

4

6

Short-Circuit

Protection

Soft-Start

Circuit

VIN

VOUT

5

1

BOOST DRIVER

COUT

CIN

Current Bias

Generator

Boost Feedback &

Timing Control Block

Chip

Enable

Thermal

Protection

EN

3

1MHz

Oscillator

VREF

2

GND

Figure 9. Block Diagram

Functional Description

The YB1300 regulated charge pump

provides a regulated 5V output voltage for

input voltages between 2.7V and 5V. This is

accomplished by a step-up or boost mode

of operation. A conversion clock of 50%

duty cycle is generated. During the first half

cycle, the pumping capacitor C_PUMP

charges to V_IN. During the second half

cycle, the voltage on C_PUMPis added to V_IN,

then deliver to V_OUT. The output voltage is

regulated by skipping clock cycles as

necessary.

limit inrush current at turn-on. When

starting up, the output capacitor is charged

through the charge-pump capacitor with a

limited current source. When the output

voltage approached to its design value, the

soft-start is terminated and normal

operation begins. If an overload condition

occurs, for example, the output is shorted

to ground, the output current is limited by

the YB1300 switching technique.

Thermal Protection

The regulator has thermal shutdown

circuitry that protects it from damage

caused by high temperature conditions.

The thermal protection circuitry shut down

Soft-Start and Short-Circuit Protection

Circuitry

The YB1300 includes soft-start circuitry to

YB1300 MRev.1.2

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5

YB1300

Regulated Charge Pump 5V 100mA

the device when the junction temperature

ensure proper regulation under all

conditions. Figure 10 and Figure 11 show

the recommended layout configuration.

reached approximately 160℃, allowing the

device to cool. When the junction

temperature cools to approximately 140℃,

the device is automatically reenabled.

Continuously running the regulator into

thermal shutdown can degrade reliability.

Shutdown Mode

A control pin on the regulator can be used

to place the device into an energy-saving

shutdown mode. In this mode, the output is

disconnected from the input.

Figure 10. Top layer

Layout Consideration

Due to large transient currents and high

switching frequency produced by the

YB1300, careful consideration of PCB

layout is necessary. In order to minimize

both input and output ripple, keep the

capacitors as close as possible to the

regulator using short, direct circuit traces. A

ground plane and short connections to all

capacitors will improve performance and

Figure 11. Bottom layer

YB1300 MRev.1.2

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6

YB1300

Regulated Charge Pump 5V 100mA

Application Information

Vout

Gnd

EN

Vcc

Gnd

YB1300 MRev.1.2

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7

YB1300

Regulated Charge Pump 5V 100mA

Package Information

Notes:

1. Dimension D1 & E1 does not include mold protrusion.

2. Coplanarity of all lead shall be (Before test) 0.1 MAX. from the seating plane. Unless otherwise specified.

3. general physical outline spec is refer to TMC’s final visual inspection spec unless otherwise specified.

YB1300 MRev.1.2

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8

型号:	YB1300ST26S450
生命周期：	Contact Manufacturer
Reach Compliance Code：	unknown
风险等级：	5.75
Is Samacsys：	N
模拟集成电路 - 其他类型：	SWITCHED CAPACITOR CONVERTER
Base Number Matches：	1

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