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WT7522 Datasheet Power Supply Pwm Supervisor

Manufacturer: Weltrend Semiconductor

Overview: 偉詮電子股份有限公司 Weltrend Semiconductor, Inc. WT7522 POWER SUPPLY PWM SUPERVISOR Data Sheet Version 1.10 April 29, 2009 The information in this document is subject to change without notice. ©Weltrend Semiconductor, Inc. All Rights Reserved. 新竹市科學工業園區工業東九路 24 號 2 樓 2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan TEL:886-3-5780241 FAX:886-3-5794278. WT7522 Data Sheet Rev. 1.

General Description

The WT7522 is a pulse–width modulation (PWM) control circuit with plete protection circuits for used in the SMPS (Switched Mode Power Supply).

It contains various functions, which are Over Voltage Protection, Under Voltage Protection, Power Good Output (PG), Remote On/Off control, Opamp and etc.

It can minimize external ponents of switching power supply systems in personal puter.

Key Features

  • Complete PWM Control and Protection Circuitry.
  • Over Voltage Protection for 3.3V / 5V / V12 / PT.
  • 3.3V / 5V / 12V Under Voltage Warning for PG Low.
  • Under Voltage Protection for 3.3V / 5V / V12.
  • Two Opamp loop function.
  • 300ms PG Time Delay.
  • Power Good Output is Open Drain Output.
  • Push-pull PWM Output.
  • Remote ON/OFF function De.
  • bounce Time.
  • Soft-Start function built-in.
  • 20.
  • Pin Dual In.

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