General Description

The MAX5070/MAX5071 BiCMOS, high-performance, current-mode PWM controllers have all the features required for wide input voltage range isolated/nonisolated power supplies. These controllers are used for low- and high-power universal input voltage and telecom power supplies

Features

♦ Pin-for-Pin Replacement for UC2842 (MAX5070A) and UC2844 (MAX5070B)

♦ 2A Drive Source and 1A Sink Capability

♦ Up to 1MHz Switching Frequency Operation

♦ Bidirectional Synchronization (MAX5071A/MAX5071B)

♦ Advanced Output Drive for Secondary-Side Synchronous Rectification (MAX5071C)

♦ Fast 60ns Cycle-by-Cycle Current Limit

♦ Trimmed Oscillator Capacitor Discharge Current Sets Maximum Duty Cycle Accurately

♦ Accurate 5 Start and Stop Voltage with 6V Hysteresis

♦ Low 32µA Startup Current

♦ 5V Regulator Output (VREF) with 20mA Capability

♦ Overtemperature Shutdown