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.