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FP6326

Synchronous Buck PWM DC-DC Controller

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fitipower integrated technology lnc.

FP6326/A

Synchronous Buck PWM

DC-DC Controller

Description

The FP6326/A is designed to drive two N-channel

MOSFETs in a synchronous rectified buck topology.

It provides the output adjustment, internal soft-start,

frequency compensation networks, monitoring and

protection functions into a single package.

The IC operating at fixed 300kHz or 600kHz

frequency provides simple, single feedback loop,

voltage mode control with fast transient response.

The resulting PWM duty ratio ranges from 0-100%.

The FP6326/A features over current protection. The

output current is monitored by sensing the voltage

drop across the RDS-ON of the low side MOSFET

which eliminates the need for a current sensing

resistor.

This device is available in SOP-8 package.

Features

● Operates from +5V or +12V

● High Output Current

● Drives Two Low Cost N-Channel MOSFETs

● Fast Transient Response

● Simple Single-Loop Control Design

( Voltage-Mode PWM Control)

● Internal Soft-Start

● Over-Current Fault Monitor

● Over-Voltage Protection

● Under-Voltage Protection

● SOP-8 Package

● RoHS Compliant

Applications

● Motherboard

● Graphic Card

● Telecomm Equipments

● High Power DC-DC Regulators

● Servers

Pin Assignment

SO Package (SOP-8)

Figure 1. Pin Assignment of FP6326/A

Ordering Information

FP6326□□□□

TR: Tape / Reel

G: Green

Package Type

SO: SOP-8

Switching Frequency

Blank: 300kHz

A: 600kHz

FP6326/A-1.1-JUL-2009

1

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