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KA5H0380R Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part # KA5H0380R
Description  SPS consist of high voltage power SenseFET and current mode PWM IC
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA5H0380R Datasheet(HTML) 1 Page - Fairchild Semiconductor

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©2000 Fairchild Semiconductor International
www.fairchildsemi.com
Rev. .5.0
Features
• Precision fixed operating frequency (100/67/50kHz)
• Low start-up current(typ. 100uA)
• Pulse by pulse current limiting
• Over current protection
• Over voltage protecton (Min. 25V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• 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
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-220F-4L
1. GND 2. DRAIN 3. VCC 4. FB
Internal Block Diagram
Vcc
Vcc
Vcc
Vcc
FB
FB
FB
FB
DRAIN
GND
GND
GND
GND
SFET
SFET
SFET
SFET
5V
Vref
OSC
INTERNAL
BIAS
GOOD
LOGIC
Q
S
R
_
+
2.5R
1R
9V
1 mA
5 uA
+
_
7.5V
THERMAL S/D
Q
S
R
POWER ON RESET
L.E.B
+
_
27V
UVLO
Rsens
KA5H0380R/KA5M0380R/KA5L0380R
SPS


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