fs8s0965rcb Fairchild Semiconductor, fs8s0965rcb Datasheet
fs8s0965rcb
Manufacturer Part Number
fs8s0965rcb
Description
Fs8s0965rcb Fairchild Power Switch Fps
Manufacturer
Fairchild Semiconductor
Datasheet
1.FS8S0965RCB.pdf
(20 pages)
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Features
• Burst Mode Operation to Reduce the Power Consumption
• External pin for Synchronization and Soft Start
• Wide Operating Frequency Range up to 150kHz
• Low Start-up Current (Max:80uA)
• Low Operating Current (Max:15mA)
• Pulse by Pulse Current Limiting
• Over Voltage Protection (Auto Restart Mode)
• Over Load Protection (Auto Restart Mode)
• Abnormal Over Current Protection (Auto Restart Mode)
• Internal Thermal Shutdown (Auto Restart Mode)
• Under Voltage Lockout
• Internal High Voltage SenseFET
Application
• Monitor SMPS
Internal Block Diagram
©2003 Fairchild Semiconductor Corporation
FS8S0965RCB
Fairchild Power Switch(FPS)
in the Standby Mode
Soft start
& Sync
FB
5
4
Vref
Vcc
Vovp
Burst Mode Detector
V
I
Vcc
delay
SD
TSD
Vfb<=1V
Vss>3V
No sync
Vref
Detector
I
FB
Sync
Burst Mode
Controller
2.5R
R
Vref
UVLO Reset
(Vcc<9V)
Vcc
Description
FS8S0965RCB is a Fairchild Power Switch (FPS) that is
specially designed for off-line SMPS of CRT monitor with
minimal external components. This device is a current mode
PWM controller combined with a high voltage power
SenseFET in a single package. The PWM controller features
integrated oscillator to be synchronized with the external
sync signal, under voltage lockout, optimized gate driver and
temperature compensated precise current sources for the
loop compensation. This device also includes various fault
protection circuits such as over voltage protection, over load
protection, abnormal over current protection and over tem-
perature protection. Compared with discrete MOSFET and
PWM controller solution, FPS can reduce total cost, compo-
nent count, size and weight simultaneously increasing effi-
ciency, productivity and system reliability. This device is well
suited for the cost effective monitor power supply.
3
1. Drain 2. GND 3. V
PWM
9V/15V
OSC
LEB
S
R
S
R
Q
Q
Q
Q
1
AOCP
Vcc good
TO-220-5L
CC
4. Feedback 5. Sync
Internal
driver
www.fairchildsemi.com
Gate
Vref
Bias
Vocl
Drain
1
2
GND
Rev.1.0.1
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