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KA3S0880RB-YDTU Datasheet

  • KA3S0880RB-YDTU

  • Fairchild Power Switch(SPS)

  • 102.40KB

  • 14页

  • FAIRCHILD

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www.fairchildsemi.com
KA3S0880RB/KA3S0880RFB
Fairchild Power Switch(SPS)
Features
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Wide operating frequency range up to 150KHz
Pulse by pulse over current limiting
Over current protection
Over voltage protection (Min. 23V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
External sync terminal
Auto Restart Mode
Description
The SPS product family is specially designed for an off-line
SMPS with minimal external components. The SPS consist of
high voltage power SenseFET and current mode PWM Control-
ler IC. PWM controller features integrated fixed oscillator,
under voltage lock out, leading edge blanking, optimized gate
turn-on/turn-off driver, thermal shut down protection, over volt-
age protection, temperature compensated precision current
sources for loop compensation and fault protection circuit.
Compared to discrete MOSFET and controller or RCC switch-
ing converter solution, a SPS 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 design in C-TV power supply.
TO-3P-5L
TO-3PF-5L
1
1
1. DRAIN 2. GND 3. V
CC
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.1.0.1
漏2001 Fairchild Semiconductor Corporation

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