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KA5M0965Q-YDTU Datasheet

  • KA5M0965Q-YDTU

  • Fairchild Power Switch(SPS)

  • 14頁

  • FAIRCHILD

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www.fairchildsemi.com
KA5M0965Q
Fairchild Power Switch(SPS)
Features
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Precision fixed operating frequency (70kHz)
Low start-up current(typ. 100uA)
Pulse by pulse current limiting
Over Load protection
Over current protection
Over voltage protecton (Min. 25V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
Latch 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
IC. Included PWM controller features integrated fixed fre-
quency oscillator, under voltage lock-out, leading edge
blanking, optimized gate turn-on/turn-off driver, thermal
shutdown protection, over voltage protection, and tempera-
ture compensated precision current sources for loopcompen-
sation and fault protection circuitry. Compared to discrete
MOSFET and PWM controller or RCC solution, a SPS can
reduce total component count, design size, weight and at the
same time increase efficiency, productivity, and system reli-
ability. It has a basic platform well suited for cost-effective
design in either a flyback converter or a forward converter.
TO-3P-5L
1. DRAIN 2. GND 3. VCC 4. FB 5. S/S
Internal Block Diagram
Vcc
3
+
27V
Drain
1
UVLO
INTERNAL
BIAS
Good Logic
CLK
OVP
OVP-out
-
V
CC
V
REF
5uA
15V/9V
1mA
Vref
VOLTAGE
Sense
LIMIT
CIRCUIT
FET
OSC
Feedback 4
Soft Start 5
+
7.5V
5V
O LP
14V
2.5R
S
-
+
LEB
R
Q
R
-
TSD
(T
J
=150
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)
OVP-out
(V
CC
=27V)
OCL
(V
S
=1.4V)
V
O F F S E T
V
S
Rsense
Q
R
S
Power-on Reset
/Auto-restart
2 GND
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LEB : Leading Edge Blanking
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OCL : Over Current Limit
Shutdown
Latch
Rev.1.0.1
漏2001 Fairchild Semiconductor Corporation

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