
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, Industrial and Medical Displays
● Ambient, Mood, and Accent Lighting