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MAX5052 - Current-Mode PWM Controllers

General Description

The MAX5052/MAX5053 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies.

The MAX5052 is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies.

Key Features

  • Available in a Tiny 8-Pin µMAX Package.
  • Current-Mode Control.
  • 50W Output Power.
  • Universal Offline Input Voltage Range Rectified 85VAC to 265VAC (MAX5052).
  • VIN Directly Driven from 10.8V to 24V Input (MAX5053).
  • Digital Soft-Start.
  • Programmable Input Startup Voltage.
  • Internal Bootstrap UVLO with Large Hysteresis (MAX5052).
  • Internal Error Amplifier with 1% Accurate Reference.
  • Thermal Shutdown.
  • 45µA (.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com 19-2590; Rev 1; 11/03 KIT ATION EVALU E L B A AVAIL Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies General Description The MAX5052/MAX5053 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX5052 is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX5053 is well suited for low-input-voltage (10.8VDC to 24VDC) power supplies. The MAX5052/MAX5053 contain an internal error amplifier that regulates the tertiary winding output voltage. This implements a primary-side regulated, isolated power supply, eliminating the need for an optocoupler.