BL8588 datasheet(1/8 Pages) BELLING

Part #	BL8588

Description	High Efficiency Charge Pump 4-Channels LED Driver

PDF	8 Pages

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Manufacturer	BELLING [SHANGHAI BELLING CO., LTD.]

Direct Link	http://www.belling.com.cn

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High Efficiency 1

××××/1.5×××× Charge Pump 4-Channels LED Driver

BL8588

DESCRIPTION

BL8588 is a low noise, high efficiency, and

constant frequency charge pump DC/DC

converter for white LED application. The

operation frequency is 1MHz.

BL8588 works in load switch (1

×) and

fractional (1.5

×) modes with four independent

control outputs, each channel can provide

20mA constant current precisely from a 2.8V

to 5.5V supply. Only two external 1

µF and

two 0.47

µF capacitors are required to build a

compact and low-cost power supply solution.

BL8588 uses EN pin for simple on/off control

and single wire serial pulse dimming in 16

steps.

A

low

current

shutdown

feature

disconnects the load from VIN and reduces

quiescent current to less than 1µA.

FEATURES

• Input range: 2.8-5.5V

• ±1% LED current accuracy

• 20mA driver capacity each channel

• Auto 1×/1.5× mode switchover

• PWM dimming control

• Serial-pulse dimming control in linear 16

steps

• Short-circuit protection

• Thermal shutdown

• 1MHz constant switching frequency

• 3mm×3mm QFN package

APPLICATION

• Programmable Current Sinks

• White LED Backlighting

• Cell Phones and Smart phones

•

PDAs, Digital Cameras, and Camcorders

•

Color (RGB) Lighting

TYPICAL APPLICATION CIRCUIT

BL8588

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BL8588 Datasheet(PDF) 1 Page - SHANGHAI BELLING CO., LTD.

BL8588 Datasheet(HTML) 1 Page - SHANGHAI BELLING CO., LTD.

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