离线和DC-DC PWM控制器，用于高亮度LED驱动器 Off-Line and DC-DC PWM Controllers for High-Brightness LED Drivers
General Description
The MAX16801A/B/MAX16802A/B high-brightness HB driver-control ICs contain all the circuitry required
for the design of wide-input-voltage-range LED drivers for general lighting and display applications. The
MAX16801 is well suited for universal input rectified 85VAC to 265VAC LED drivers, while the MAX16802 is
intended for low-input-voltage 10.8VDC to 24VDC LED drivers.
Features
♦Suitable for Buck, Boost, Flyback, SEPIC, and Other Topologies
♦Up to 50W or Higher Output Power
♦Universal Offline Input Voltage Range: Rectified 85VAC to 265VAC MAX16801
♦IN Pin Directly Driven From 10.8VDC to 24VDC Input MAX16802
♦Internal Error Amplifier with 1% Accurate Reference for Precise LED Current Regulation
♦PWM or Linear Dimming
♦Fixed Switching Frequency of 262kHz ±12%
♦Thermal Shutdown
♦Digital Soft-Start
♦Programmable Input Startup Voltage
♦Internal Bootstrap UVLO with Large Hysteresis MAX16801
♦45µA typ Startup Supply Current, 1.4mA typ Operating Supply Current
♦50% MAX16801A/MAX16802A or 75% MAX16801B/MAX16802B Maximum Duty Cycle
♦Available in a Tiny 8-Pin µMAX Package
Applications
Offline and DC-DC LED Drivers
RGB Back Light for LCD TVs and Monitors
Commercial and Industrial Lighting
Decorative and Architectural Lighting