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BD2812GU

Part Number	BD2812GU
Manufacturer	Rohm
Description	2-Channel RGB Charge Pump LED Driver
Published	Dec 13, 2010
Detailed Description	Datasheet 2-Channel RGB Charge Pump LED Driver with Illumination BD2812GU ●General Description The BD2812GU is a RGB L...
Datasheet	BD2812GU PDF File

Overview

Datasheet 2-Channel RGB Charge Pump LED Driver with Illumination BD2812GU ●General Description The BD2812GU is a RGB LED driver for decorative purposes.
This RGB driver has lighting patterns and can illuminate LEDs without load of CPU.
This RGB driver is best-suited for illumination using RGB LEDs, and decoration using monochrome LEDs.
The DC/DC block adopts a charge pump system and not uses an inductor.
This RGB driver has been miniaturized through the use of a VCSP85H3 (3.
1 mm×3.
1 mm 0.
5 mm pitch) chip size package.
●Features RGB LED driver (dual drivers) A slope control function is incorporated (allowing dual drivers to be controlled independently).
Slope control can be implemented using the DC current.
Two modes “continuous illumination mode” and “illumination single cycle mode” are supported.
Independent external ON/OFF synchronizing terminals (of dual drivers) are provided.
Multiple drivers can be used concurrently by using the I2C address change function and supporting reference clock I/O.
Low consumption operation is possible by the Sleep operation mode function.
●Features – continued Charge pump system DC/DC Boost magnification is changed automatically (x1, x1.
5, x2) Supports an output voltage auto mode function (It adjusts to voltage required for LED automatically) Supports an output voltage fixed mode function (3.
9V/4.
2V/4.
5V/4.
8V) Mounts a soft start function, an over voltage protection function (auto recovery type) and an over current protection (auto recovery) Thermal shutdown I2C BUS fast mode support (maximum rate: 400 kHz) format A device address can be changed via an external pin.
●Key Specifications Operating power supply voltage range: 2.
7V to 5.
5V LED maximum setting current: 30.
48mA (Max.
) Oscillator Frequency: 1.
0MHz(Typ.
) Operating temperature range: -40℃ to +85℃ ●Package VCSP85H3 W(Typ.
) x D(Typ.
) x H(Max.
) 3.
10mm x 3.
10mm x 1.
00mm ●Application Mobile Phone, Portable device ●Typical Application Circuit 1μF 1μF VBAT VBATCP VBA...

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BD2812GU 2-Channel RGB Charge Pump LED Driver - Rohm

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