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KA2S1265-YDTU Datasheet

  • KA2S1265-YDTU

  • Fairchild Power Switch(SPS)

  • 12頁(yè)

  • FAIRCHILD

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www.fairchildsemi.com
KA2S1265
Fairchild Power Switch(SPS)
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
Latch up Mode
Description
The SPS product family is specially designed for an offline
SMPS with minimal external components. The SPS consist
of high voltage power SenseFET and current mode PWM
Controller IC. 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 volt-
age protection, temperature compensated precision current
sources for loop compensation and fault protection circuit.
Compared to discrete MOSFET and controller or RCC
switching converter solution, a SPS can reduce total compo-
nent 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 Monitor power
supply.
TO-3P-5L
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(chǔ)
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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+
0.1V
S
R
Q
#2 GND
OSC
S
R
L.E.B
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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