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1FEATURES

2Lighting:

? 8-channel Backlight Capability

? Internal ALS Engine; PWM Input to Support

CABC

? Built-In Power Supply and Gain Control for

Ambient Light Sensor

? Up to 90% Efficiency

? Adaptive Charge Pump with 1x and 1.5x

Ggains for Maximum Efficiency

? 128 Dimming Steps for Group A, Exponential

or Linear Dimming Selectable by Register

Setup

? 8 Linear Dimming States for Group B

LDOs:

? 4 Programmable LDOs (300 mA/150 mA Output

Currents)

? Default Startup Voltage States

? Low Dropout Voltage: 100 mV typ. at 150 mA

Load Current

? LDO Input Voltage = 1.8V to VIN_A

? Overload Protection

Combined Common Features:

? Wide Input Voltage Range: 2.7V to 5.5V

? I2C-Compatible Serial Interface

? 2 General-Purpose Outputs

APPLICATIONS

? Smartphone Lighting

? MP3 Players, Gaming Devices

? Digital Cameras

DESCRIPTION

The LM3537 is a highly integrated LED driver

capable of driving 8 LEDs in parallel for single display

backlighting applications. Independent LED control

allows for a subset of the main display LEDs to be

selected for partial illumination applications.