ADD5201
FEATURES
High Efficiency, Eight-String, White LED Driver for LCD Backlight Applications ADD5201
BLOCK DIAGRAM
STEP-UP SWITCHING REGULATOR
White LED driver based on inductive boost converter Integrated 50 V MOSFET with 2.9 A peak current limit Input voltage range: 6 V to 21 V Maximum output adjustable up to 45 V 350 k Hz to 1 MHz adjustable operating frequency Built-in soft start for boost converter Drives up to eight LED current sources LED current adjustable up to 30 m A for each channel Headroom control to maximize efficiency Adjustable output dimming frequency: 200 Hz to 10 k Hz LED open/short fault protection Selectable brightness control interface modes PWM input SMBus serial interface Selectable dimming controls Fixed delay PWM dimming control with 8-bit resolution No delay PWM dimming control with 8-bit resolution Phase shift PWM dimming control with 8-bit resolution Direct PWM dimming control DC current dimming mode with 8-bit resolution General Thermal shutdown Undervoltage...
