February 2011

© 2009 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN6753 • Rev. 1.0.3

FAN6753

Highly Integrated Green-Mode PWM Controller

Features

EMI Emission

Auto Recovery / Latch for Option

Protection for Option

Latch Function

Applications

General-purpose switch-mode power supplies and

flyback power converters, including:

Description

The highly integrated FAN6753 PWM controller provides

several features to enhance the performance of flyback

converters.

To minimize standby power consumption, a proprietary

adaptive green-mode function provides frequency

modulation at light-load conditions. To avoid acoustic-

noise problems, the minimum PWM frequency is set

above 22KHz. This green-mode function enables the

power supply to meet international power conservation

requirements. With the internal high-voltage startup

circuitry, the power loss due to bleeding resistors is also

eliminated. To further reduce power consumption,

FAN6753 is manufactured using the BiCMOS process,

which allows an operating current of only 2.7mA.

FAN6753 integrates a full-range frequency-hopping

function internally that helps reduce EMI emission of a

power supply with minimum line filters. Its built-in

synchronized slope compensation achieves stable peak-

current-mode control. The proprietary internal line

compensation ensures constant output power limit over

FAN6753 provides many protection functions. In

addition to cycle-by-cycle current limiting, the internal

open-loop protection circuit ensures safety should an

open-loop or output short-circuit failure occur. PWM

exceeds ~26V, the internal OVP circuit is triggered.

Available in the 8-pin SOP package.

Ordering Information

Part Number

Operating

Temperature Range

Package

Packing Method

FAN6753MY

-40

C to +105C

8-Lead, Small Outline Package

Tape & Reel