
Maxim Integrated
General Description
The MAX16807 is an integrated, high-efficiency white or RGB LED driver. It is designed for LCD backlighting and other LED lighting applications with multiple strings of LEDs. The MAX16807 current-mode PWM controller regulates the necessary voltage to the LED array. Depending on the input voltage and LED voltage range, it can be used with boost or buck-boost (SEPIC) topologies. The MAX16807 features an 8V to 26.5V input voltage range. A wide range of adjustable frequency (20kHz to 1MHz) allows design optimization for efficiency and minimum board space.
FEATUREs
♦ Eight Constant-Current Output Channels (Up to 55mA Each)
♦ ±3% Current Matching Among Outputs
♦ Paralleling Channels Allows Higher Current per LED String
♦ Output Rated for 36V Continuous Voltage
♦ Output-Enable Pin for PWM Dimming (Up to 30kHz)
♦ One Resistor Sets LED Current for All Channels
♦ Wide Dimming Ratio Up to 5000:1
♦ Low Current-Sense Reference (300mV) for High Efficiency
♦ 8V to 26.5V Input Voltage or Higher with External Biasing Devices
♦ 4-Wire Serial Interface to Control Individual Output Channels
APPLICATIONs
LCD White or RGB LED Backlighting: LCD TVs, Desktop, and Notebook Panels Automotive Navigation, Heads-Up, and Infotainment Displays Industrial and Medical Displays
Ambient, Mood, and Accent Lighting