YB1313 datasheet(1/9 Pages) YOBON

No de pièce	YB1313

Description	1x/1.5x/2x Charge Pump for White LED Application

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Fabricant	YOBON [YOBON TECHNOLOGIES,INC.]

Site Internet	http://www.yobon.com.tw

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YB1313

1x/1.5x/2x Charge Pump for White LED Application

YB1313 MRev.1.1

www.yobon.com.tw

1

Description

The YB1313 charge pump is designed to drive

up to 5 white LEDs with regulated constant

current in back lit display application. The

device can provide up to 25 mA per LED for a

total of more than 125 mA. The input voltage

ranges from 2.7V to 5.5V and is ideal for

applications powered by a single LI-Ion or 3 to

4 NiCd, NiMH or Alkaline batteries.

The 1MHz fix-frequency switching allows for

tiny external components, and the regulation

scheme is optimized to ensure low EMI and

low input ripple.

Internal soft-start circuitry effectively reduces

the in-rush current. YB1313 also provides short

circuit protection, over-temperature protection

and over-voltage protection. In shutdown mode,

the shutdown current is less than 1μA. YB1313

is available in a TQFN-16 3x3 package.

Typical Application Circuit

Features

Input Range : 2.7V to 5.5V

Drives up to 5 LEDs at 25mA Each

1MHz Internal Oscillator

Thermal Protection Shutdown

Output Short-circuit Current Limit and

Over-voltage Protection

Under-Voltage Lockout With Hysteresis

Automatic Soft-Start Reduces In-Rush

Current

Three Charge Pump Mode：1x/1.5x/2x

3mm x 3mm TQFN package

Applications

White LED Backlighting

Handheld PCs and PDAs

Mobile Phone

VIN

C1+

C1-

C2+

C2-

EN1

EN2

GND

VOUT

D1

D2

D3

D4

D5

ISET

PGND

0. 47 µF

1 µF

VIN = 2.7V

To5.5V

YB 1313

2.2uF

Figure 1. Typical application circuit

Numéro de pièce similaire - YB1313

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YB1313 Fiches technique(PDF) 1 Page - YOBON TECHNOLOGIES,INC.

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