LG ACC75T Service Manual

©2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com
February 2006
FSCQ-Series Rev. 1.1.2
FSCQ-Series Green Mode Fairchild Power Switch (FPS™)
FSCQ-Series
FSCQ0565RT/FSCQ0765RT/FSCQ0965RT/FSCQ1265RT/
FSCQ1465RT/FSCQ1565RT/FSCQ1565RP
Green Mode Fairchild Power Switch (FPS™)
Features
■
Optimized for Quasi-Resonant Converter (QRC)
■
Advanced Burst-Mode Operation for under 1W
Standby Power Consumption
■
Pulse-by-Pulse Current Limit
■
Over Load Protection (OLP) – Auto Restart
■
Over Voltage Protection (OVP) – Auto Restart
■
Abnormal Over Current Protection (AOCP) – Latch
■
Internal Thermal Shutdown (TSD) – Latch
■
Under Voltage Lock Out (UVLO) with Hysteresis
■
Low Startup Current (typical: 25µA)
■ Internal High Voltage SenseFET
■
Built-in Soft Start (20ms)
■
Extended Quasi-Resonant Switching
Applications
■
CTV
■
Audio Amplifier
Related Application Notes
■
AN4146: Design Guidelines for Quasi-Resonant
Converters Using FSCQ-Series Fairchild Power
Switch.
■
AN4140: Transformer Design Consideration for
Off-Line Flyback Converters Using Fairchild Power
Switch.
Description
A Quasi-Resonant Converter (QRC) typically shows
lower EMI and higher power conversion efficiency com-
pared to conventional hard-switched converter with a
fixed switching frequency. Therefore, a QRC is well
suited for noise-sensitive applications, such as color TV
and audio. Each product in the FSCQ-Series contains an
integrated Pulse Width Modulation (PWM) controller and
a SenseFET, and is specifically designed for quasi-
resonant off-line Switch Mode Power Supplies (SMPS)
with minimal external components. The PWM controller
includes an integrated fixed frequency oscillator, under volt-
age lockout, leading edge blanking (LEB), optimized gate
driver, internal soft start, temperature-compensated pre-
cise current sources for a loop compensation, and self
protection circuitry. Compared with a discrete MOSFET
and PWM controller solution, the FSCQ-Series can
reduce total cost, component count, size, and weight, while
simultaneously increasing efficiency, productivity, and sys-
tem reliability. These devices provide a basic platform that
is well suited for cost-effective designs of quasi-resonant
switching flyback converters.
Ordering Information
YDTU: Forming Type
VDTU: Forming Type
Product Number Package Marking Code BVdss R
ds(ON)
Max.
FSCQ0565RTYDTU TO-220F-5L (Forming) CQ0565RT 650V 2.2 Ω
FSCQ0765RTYDTU TO-220F-5L (Forming) CQ0765RT 650V 1.6 Ω
FSCQ0965RTYDTU TO-220F-5L (Forming) CQ0965RT 650V 1.2 Ω
FSCQ1265RTYDTU TO-220F-5L (Forming) CQ1265RT 650V 0.9 Ω
FSCQ1465RTYDTU TO-220F-5L( Forming) CQ1465RT 650V 0.8 Ω
FSCQ1565RTYDTU TO-220F-5L (Forming) CQ1565RT 650V 0.7 Ω
FSCQ1565RPVDTU TO-3PF-7L (Forming) CQ1565RP 650V 0.7 Ω

LG ACC75T Specifications

General

Brand	LG
Model	ACC75T
Category	Receiver
Language	English