September 2012

© 2012 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN6862W • Rev. 1.0.0

FAN6862W

Highly Integrated Green-Mode PWM Controller

Features

Current Limiting

Burst Mode at Light Loads

Hopping

Applications

General-purpose switched-mode power supplies and

flyback power converters, including:

Printers, Scanners, Motor Drivers

Description

A highly integrated PWM controller, FAN6862W

provides several features to enhance the performance

of flyback converters. To minimize standby power

consumption, a proprietary Green Mode provides off-

time modulation to continuously decrease the switching

frequency under light-load conditions. Under zero-load

conditions, the power supply enters Burst Mode, which

completely shuts off PWM output. Output restarts just

before the supply voltage drops below the UVLO lower

limit. Green Mode enables power supplies to meet

international power conservation requirements.

The FAN6862W is designed for SMPS and integrates a

frequency-hopping function that helps to reduce EMI

emission of a power supply with minimum line filters. To

compensate the power limit variation over universal

the power limit substantially constant. The gate output is

clamped at 13.5 V to protect the external MOSFET from

over-voltage damage.

Protection (OVP), and Over-Temperature Protection

(OTP). For OTP, an external NTC thermistor can be

OVP or OTP is activated, an internal latch circuit latches

off the controller. Protection types are shown in Table 1.

Table 1. Protection Type

Part Number

OVP

OLP

OTP / OTP2

FAN6862W

Latch

A/R

Latch

FAN6862WL

Latch

Latch

Latch

FAN6862WR

A/R

A/R

A/R

Ordering Information

Part Number

Operating

Temperature

Range

Package

Packing

Method

FAN6862WTY

-40 to +105°C

6-Lead, SOT23, JEDEC MO-178 Variation AB, 1.6 mm Wide

Tape & Reel

FAN6862WLTY

FAN6862WRTY