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LM3538
www.ti.com SNVS674A – JUNE 2011 – REVISED MAY 2013 LM3538 6-Channel WLED Driver with Four Integrated LDOs
Check for Samples: LM3538 FEATURES 1 Lighting: 2 6-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 Gains
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 (300mA/150mA Output
Currents)
Default Startup Voltage States
Low Dropout Voltage: 100mV typ. at 150mA
Load Current
LDO Input Voltage = 1.8V to VIN_A
Overload Protection
Combined Common Features: …
