General Description

The APW7066 has two synchronous buck PWM control lers and one linear controller with high precision internal references voltage to offer accurate outputs. The PWM controllers are designed to drive two N-channel MOSFETs in synchronous buck topology, and the linear controller drives an external N-channel MOSFET. The device requires 12V and 5V power supplies, if the 5V supply is not available, VCC12 can offer an optional shunt regulator 5.8V for 5V supply.

特性 Features

· Two Synchronous Buck Converters and A Linear Regulator

· VIN Range up to 12V

· Input Power Supplies Require 12V and 5V or Use 12V to Generate a Shunt Regulator 5.8V

· 0.6V Reference for VOUT1 and VOUT3 with 0.8 Accurate

· 3.3V Reference for VOUT2 with 0.8 Accurate

· Buffered VTT Reference Output

· Three Outputs have Independent Soft-Start and Enable

· Internal 300kHz Oscillator and Programmable Frequency Range from 70 kHz to 800kHz

· Synchronous Switching Frequency

· DDR Mode or Independent Mode Selection

· Phase Shift Selection

· Power Good Function

· Short-Circuit Protection for VOUT1 and VOUT2

· Thermally Enhanced TSSOP-24P and QFN5x5-32 Packages

· Lead Free and Green Devices Available (RoHS Compliant)

Applications

· Graphic Cards

· DDR memory Power Supplies

· Low-Voltage Distributed Power Supplies