LM3538 Description
The LM3538 is a highly integrated LED driver capable of driving 6 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. I2C-patible control allows full configurability of the backlighting function.
LM3538 Key Features
- 6-channel Backlight Capability
- Internal ALS Engine; PWM Input to Support
- Up to 90% Efficiency
- Adaptive Charge Pump with 1x and 1.5x Gains
- 128 Dimming Steps for Group A, Exponential
- 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