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.