General Description

The MAX16801A/B/MAX16802A/B high-brightness (HB) LED 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.

特性 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

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