June 2012

© 2012 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN302HLMY_F117 • Rev. 1.0.1

FAN302HLMY_F117

PWM Controller for Low Standby Power Battery-

Charger Applications — mWSaver™ Technology

Features

Best-in-Class Standby Power

-

Achieves <10mW Below Energy Star’s 5-Star

Level: <30mW

-

Proprietary 500V High-Voltage JFET Startup

Reduces Startup Resistor Loss

-

Low Operation Current in Burst Mode:

350µA Maximum

Feedback Circuitry

Hopping to Reduce EMI

Compensation

Applications

Phones, PDAs, Digital Cameras, and Power Tools

Description

The FAN302HLMY_F117 advanced PWM controller

significantly simplifies isolated power supply design that

requires CC regulation of the output. The output current

is precisely estimated with information in the primary

side of the transformer and controlled with an internal

compensation circuit. This removes the output current

sensing loss and eliminates all external Control Circuitry

(CC). The Green-Mode function, with an extremely low

operating current (200µA) in Burst Mode, maximizes the

light-load efficiency, enabling conformance to worldwide

Standby Mode efficiency guidelines.

Integrated protections include two-level pulse-by-pulse

current limit, Over-Voltage Protection (OVP), brownout

protection, and Over-Temperature Protection (OTP).

Compared with a conventional approach using an

external control circuit in the secondary side for CC

regulation, the FAN302HLMY_F117 can reduce total

cost, component count, size, and weight; while

simultaneously increasing efficiency, productivity, and

system reliability.

Figure 1. Typical Output V-I Characteristic

Ordering Information

Part Number

Operating

Temperature Range

Package

Packing

Method

FAN302HLMY_F117

-40

°C to +105°C

8-Lead, Small Outline Package (SOIC),

JEDEC MS-012, .150-Inch Narrow Body

Tape & Reel

Maximum

Typical

Minimum