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Fairchild Semiconductor Electronic Components Datasheet

CQ765RT Datasheet

FSCQ765RT

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January 2014
FSCQ-Series:
FSCQ0565RT / FSCQ0765RT / FSCQ0965RT / FSCQ1265RT / FSCQ1565RT
Green Mode Fairchild Power Switch (FPS™)
Features
Optimized for Quasi-Resonant Converter (QRC)
Advanced Burst-Mode Operation for under 1 W
Standby Power Consumption
Pulse-by-Pulse Current Limit
Overload Protection (OLP) Auto Restart
Over-Voltage Protection (OVP) Auto Restart
Abnormal Over-Current Protection (AOCP) Latch
Internal Thermal Shutdown (TSD) Latch
Under-Voltage Lockout (UVLO) with Hysteresis
Low Startup Current (Typical: 25 μA)
Internal High Voltage SenseFET
Built-in Soft-Start (20 ms)
Extended Quasi-Resonant Switching
Applications
CTV
Audio Amplifier
Description
A Quasi-Resonant Converter (QRC) typically shows
lower EMI and higher power conversion efficiency
compared to a 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. This series 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-voltage lockout, leading-
edge blanking (LEB), optimized gate driver, internal soft-
start, temperature-compensated precise current sources
for 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 increasing
efficiency, productivity, and system reliability. These
devices provide a basic platform for cost-effective
designs of quasi-resonant switching flyback converters.
Related Resources
AN-4146 Design Guidelines for Quasi-Resonant Converters Using FSCQ-Series Fairchild Power Switch
AN-4140 Transformer Design Consideration for Offline Flyback Converters Using Fairchild Power Switch
Ordering Information
Part Number
Package
FSCQ0565RTYDTU
FSCQ0765RTYDTU
FSCQ0965RTYDTU
FSCQ1265RTYDTU
FSCQ1565RTYDTU
TO-220F-5L (Forming)
TO-220F-5L (Forming)
TO-220F-5L (Forming)
TO-220F-5L (Forming)
TO-220F-5L (Forming)
© 2006 Fairchild Semiconductor Corporation
FSQ-Series Rev. 1.1.3
Marking Code
CQ0565RT
CQ0765RT
CQ0965RT
CQ1265RT
CQ1565RT
BVDSS (V)
650
650
650
650
650
RDSON Max. ()
2.2
1.6
1.2
0.9
0.7
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

CQ765RT Datasheet

FSCQ765RT

No Preview Available !

Typical Circuit
AC
IN
Sync
FSCQ-Series
PWM
VFB
VCC
Drain
GND
VO
Figure 1. Typical Flyback Application
Table 1. Maximum Output Power(1)
Product
230 VAC ±15%(2)
Open Frame(3)
FSCQ0565RT
FSCQ0765RT
FSCQ0965RT
FSCQ1265RT
FSCQ1565RT
70 W
100 W
130 W
170 W
210 W
Notes:
1. The junction temperature can limit the maximum output power.
2. 230 VAC or 100/115 VAC with doubler.
3. Maximum practical continuous power in an open frame design at 50C ambient.
85265 VAC
Open Frame(3)
60 W
85 W
110 W
140 W
170 W
© 2006 Fairchild Semiconductor Corporation
FSQ-Series Rev. 1.1.3
2
www.fairchildsemi.com


Part Number CQ765RT
Description FSCQ765RT
Maker Fairchild Semiconductor
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CQ765RT Datasheet PDF






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