Description

4 Channel High Current LED Driver with Adaptable Power Control Features: Highly integrated feature set for a high brightness LED driver solution with minimal external components 4 current sink channels with an adjustable current from 125 μA to 500 mA Analog and pulse-width modulation (PWM) dimming inputs Analog and PWM LED current outputs 2% (maximum) matching between LED channels 5% (maximum) LED current accuracy Operates from VIN of 3 V to 30 V; higher voltages easily accomplished with an external Zener diode Operates with LED anode supply voltages up to 100 V dc Feedback output controls external power source for optimal efficiency and safety Multiple ADP8140 IC operation in parallel to control one power supply Integrated error amplifier for secondary side control of isolated power supplies Easy connection of a temperature thermistor or light sensor Provides robust protection of the entire system Power supply overvoltage protection LED overtemperature protection LED short-circuit protection LED open-circuit protection IC overtemperature protection Shorted ISET protection Open ISET and EN protection Standby mode for low current consumption Fault indicator output Small, thermally enhanced, LFCSP package (4 mm × 4 mm)