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3512 - PC POWER SUPPLY SUPERVISORS

Datasheet Summary

Description

The UTC 3512 is specially designed for switching power supply system.

It provides over-voltage protection, over-current protection, under-voltage protection, on/off control and power good signal generating.

Features

  • Over/Under-voltage protection for 3.3V, 5V, and two 12V.
  • Over-current protection for 3.3V, 5V, and two 12V.
  • PGO and FPO pins with open drain output stage.
  • 300mS power good delay from PGI to PGO.
  • 75mS delay for 3.3V, 5V and 12V power turn on.
  • 2.8mS delay for PSON control to FPO turn off.
  • 38mS / 115mS PSON on/off de-bounce time.
  • 73uS width noise deglitches.
  • 73uS de-bounce time for UVP and OCP.
  • Wide supply voltage range.

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Datasheet Details

Part number 3512
Manufacturer UTC
File Size 249.31 KB
Description PC POWER SUPPLY SUPERVISORS
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UNISONIC TECHNOLOGIES CO., LTD 3512 PC POWER SUPPLY SUPERVISORS DESCRIPTION The UTC 3512 is specially designed for switching power supply system. It provides over-voltage protection, over-current protection, under-voltage protection, on/off control and power good signal generating. OVP/UVP (Over/Under-Voltage Protection) monitors 3.3V, 5V and double 12V to protect our power supply and PC, FPO goes to high when one of these supply voltages exceeds their normal operation voltage range. OCP (Over Current Protection) monitors IS33, IS5, IS12 input current. The voltage difference across external current shunt is used for OCP functions. An external resistor which is connected between the RI pin and the GND pin can be used to adjust protection threshold.
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