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KA3S1265R-YDTU Datasheet

  • KA3S1265R-YDTU

  • Fairchild Power Switch(FPS)

  • 147.67KB

  • 12页

  • FAIRCHILD

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www.fairchildsemi.com
KA3S1265R/KA3S1265RF/
KA3S1265RD
Fairchild Power Switch(FPS)
Features
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Wide operatimg frequency range up to (150kHz)
Pulse by pulse over current limiting
Over load protection
Over voltage protecton (Min. 23V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
External sync terminal
Auto Restart Mode
Description
The Fairchild Power Switch(FPS) product family is specially
designed for an off line SMPS with minimal external
components. The Fairchild Power Switch(FPS) consist of
high voltage power SenseFET and current mode PWM IC.
Included control IC features a trimmed oscillator, under
voltage lock-out, leading edge blanking, optimized gate
turn-on/turn-off driver, thermal shut down protection, over
voltage protection, temperature compensated precision
current sources for loop compensation and fault protection
circuit. compared to discrete MOSFET and controller or
R
CC
switching converter solution, a Fairchild Power
Switch(FPS) can reduce total component count, design size,
weight and at the same time increase efficiency,
productivity, and system reliability. It has a basic platform
well suited for cost-effective C-TV power supply.
TO-3P-5L
TO-3PF-5L
1
1
1. DRAIN 2. GND 3. Vcc 4. FB 5. Sync
Internal Block Diagram
#3 V
CC
32V
5V
Vref
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5V
+
6.4V
#4 FB
2碌A
1mA 2.5R
1R
9V
+
7.5V
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+
25V
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Thermal S/D
OVER VOLTAGE S/D
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+
OSC
S
R
L.E.B
0.1V
S
R
Q
#2 GND
Q
Good
logic
Internal
bias
#1 DRAIN
SFET
#5 Sync
Power on reset
Rev.1.0.2
漏2001 Fairchild Semiconductor Corporation

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