General Description

The MAX15000/MAX15001 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX15000 is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX15001 is well suited for low input voltage (9.5VDC to 24VDC) power supplies.

Features

♦ Current-Mode Control

♦ Programmable Switching Frequency Up to 625kHz

♦ Accurate UVLO Threshold (1)

♦ Open-Drain UVLO Flag Output with Internal Delay

♦ 36V to 72V Telecom Voltage Range

♦ Universal Offline Input Voltage Range Rectified 85VAC to 265VAC (MAX15000)

♦ 9.5V to 24V Input (MAX15001)

♦ Digital Soft-Start

♦ Internal Bootstrap UVLO with Large Hysteresis (MAX15000)

♦ Internal Error Amplifier with 1.5 Accurate Reference

♦ 50µA (typ) Startup Supply Current

♦ 50 Maximum Duty-Cycle Limit (MAX15000A/MAX15001A)

♦ 75 Maximum Duty-Cycle Limit (MAX15000B/MAX15001B)

♦ 60ns Cycle-by-Cycle Current-Limit Propagation Delay

♦ Available in Tiny 10-Pin µMAX Packages

Applications

    1/2, 1/4, and 1/8th Brick Power Modules

    High-Efficiency, Isolated Telecom Power Supplies

    Networking/Servers

    Isolated Keep-Alive Power Supplies

    12V Boost and SEPIC Regulators

    Isolated and Nonisolated High-Brightness LED Power Supplies

    Industrial Power Conversion