MC33566 Datasheet (ON Semiconductor) - Smart Voltage Regulator

MC33566, Smart Voltage Regulator

1 +3.3 Vaux Auxiliary input.

Typical voltage 3.3 V.

2 +5.0 Vin This is the input supply for the IC.

Typical voltage 5.0 V.

(Notes 1 and 2) 3 Gnd Logic and power ground.

4 +3.3 Vout 3.3 V output provided to the application circuit (output current is sourced to this pin from the 5.0 V inpu

MC33566 Smart Voltage Regulator for Peripheral Card Applications The MC33566 Low Dropout Regulator is designed for computer peripheral card applications complying with the instantly available requirements as specified by ACPI objectives.

The MC33566 permits glitch free transitions from “sleep” to “active” system modes and has internal logic circuitry to detect whether the system is being powered from the motherboard main 5.0 V power supply or the 3.3 V aux supply.

The MC33566 provides a

MC33566 Features

* Output Current up to 0.4 A

* Excellent Line and Load Regulation

* Low Dropout Voltage

* Prevents Reverse Current Flow During Sleep Mode

* Glitch

* Free Transfer from Sleep Mode to Active Mode

* Compatible with Instantly Available PC Systems +3