Auto-Brightness Control LED Driver
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IR2E51Y
IR2E51Y
Auto-Brightness Control LED Driver
■Description
IR2E51Y incorporates white LED d...
Description
www.DataSheet4U.com
IR2E51Y
IR2E51Y
Auto-Brightness Control LED Driver
■Description
IR2E51Y incorporates white LED driver with auto brightness control. This IC is equipped with charge pump DC/DC converter. Input voltage is boosted into CPO by a charge pump circuit. This IC maintains high efficiency since the charge pump circuit automatically selects 1x or 1.5x charge pump mode depending on input voltage and load. It contains 4 white LED drivers to drive the main-LCD backlight, 2 white LED drivers for sub-LCD backlight and RGB-LED drivers. All LED are connected in parallel. With peripheral ambient light sensor, this IC automatically adjusts white LED brightness to ambient brightness. This IC supports I2C-Bus interface. This product is optimum for use as the backlight white LED driver IC for cellular phone and PDA applications, etc.
■Agency approvals/Compliance
1. Compliant with RoHS directive(2002/95/EC)
■Applications
1.Back light and call alert display (White & RGB LED)
■Features
1. Supply Voltage Range: VIN=3.0V to 4.5V, VCC=2.3V to 3.2V 2. Supports I2C-Bus interface 3. SCL pin and SDA pin are installed with noise filters. 4. Sink-type variable constant current driver for LED (maximum current 27.4mA/ch) 5. Monitoring all LED pins (Response to VF variation of LED) 6.Auto brightness control circuit for main-LCD embedded. (16 steps and 128 gradation sequence) 7.PWM LED Brightness Control (0% to 100%) (RGB) (The PWM signal frequency of 2kHz to 5kHz is recommended.) 8.1x/1...
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