General Description

The MAX5068 is a high-frequency, current-mode, pulse-width modulation (PWM) controller that integrates all the building blocks necessary for implementing ACDC or DC-DC fixed-frequency power supplies. Isolated or nonisolated power supplies are easily constructed using either primary- or secondary-side regulation

Features

♦ Current-Mode Control with 47µA (typ) Startup Current

♦ Resistor-Programmable ±4.5 Accurate Switching Frequency: 25kHz to 1.25MHz (MAX5068A/B) 12.5kHz to 625kHz (MAX5068C/D/E/F)

♦ Rectified 85VAC to 265VAC or 36VDC to 72VDC Input (MAX5068A/C/D)

♦ Input Directly Driven from 10.8V to 24V (MAX5068B/E/F)

♦ Frequency Synchronization Input (MAX5068A/B/C/E)

♦ Programmable Dead Time and Slope Compensation

♦ Programmable Startup Voltage (UVLO)

♦ Programmable UVLO Hysteresis (MAX5068A/B/D/F)

♦ Integrating Fault Protection (Hiccup)

♦ -40°C to +125°C Automotive Temperature Range

♦ 16-Pin Thermally Enhanced TSSOP-EP Package

Applications

    Universal-Input AC Power Supplies

    Isolated Telecom Power Supplies

    Networking System Power Supplies

    Server Power Supplies

    Industrial Power Conversion