General Description

The MAX5003 high-voltage switching power-supply controller has all the features and building blocks needed for a cost-effective flyback and forward voltagemode control converter.

Features

♦ Wide Input Range: 11V to 110V

♦ Internal High-Voltage Startup Circuit

♦ Externally Adjustable Settings

   Output Switch Current Limit

   Oscillator Frequency

   Soft-Start

   Undervoltage Lockout

   Maximum Duty Cycle

♦ Low External Component Count

♦ External Frequency Synchronization

♦ Primary or Secondary Regulation

♦ Input Feed-Forward for Fast Line-Transient

   Response

♦ Precision ±2.5% Reference over Rated

   Temperature Range

♦ Thermal Shutdown

Applications

   Telecommunication Power Supplies

   ISDN Power Supplies

   +42V Automobile Systems

   High-Voltage Power-Supply Modules

   Industrial Power Supplies