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IR2E51Y

Features: 1. Supply Voltage Range: VIN=3.0V to 4.5V, VCC=2.3V to 3.2V2. Supports I2C-Bus interface3. 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.Au...

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SeekIC No. : 004376172 Detail

IR2E51Y: Features: 1. Supply Voltage Range: VIN=3.0V to 4.5V, VCC=2.3V to 3.2V2. Supports I2C-Bus interface3. SCL pin and SDA pin are installed with noise filters.4. Sink-type variable constant current drive...

IR2E51Y Data Sheet

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Part Number:
IR2E51Y
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



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/1.5x Modes Charge Pump: Automatically Selected
9.Voltage reference embedded
10.Stand-by circuit embedded
11.Power-on-reset circuit embedded
12.Soft-Start Limits Inrush Current
13.Effective illuminance range (3lx to 55000lx) (GA1A1S201WP)


Application

1.Back light and call alert display (White & RGB LED)


Specifications

Parameter Symbol Rating Unit Conditions
Power supply VIN 5.5 V  
Power supply VCC 5.5 V VCCVIN
Terminal voltage VDD -0.3V ~ VCC+0.3 V  
Terminal voltage1 Vin1 -0.3V ~ VDD+0.3 V Input pin: EN_RGB,XRESET
Terminal voltage2 Vin2 -0.3V ~ VDD+0.3 V Input pin: SCL,SDA
CPO output current ICPO 220 mA Total drive current
Output current ILED 35/ch mA Each drive pin current
Power dissipation Pd 1660 mW Ta25°C Note1
Derating ratio Pd 16.6 mW/°C Ta>25°C Note1
Operating temperature range Topr -20 ~ 85 °C  
Storage temperature range Tstg -55 ~ 125 °C  
Note1: Free convection,on-board,compiled with SEMI42-996


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 of the IR2E51Y 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.




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