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KA5H0380R-YDTU fiches techniques PDF

Fairchild - SPS consist of high voltage power SenseFET and current mode PWM IC

Numéro de référence KA5H0380R-YDTU
Description SPS consist of high voltage power SenseFET and current mode PWM IC
Fabricant Fairchild 
Logo Fairchild 





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KA5H0380R-YDTU fiche technique
www.fairchildsemi.com
KA5H0380R/KA5M0380R/KA5L0380R
SPS
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
Internal Block Diagram
1. GND 2. DRAIN 3. VCC 4. FB
Vcc
FB
5 uA
UVLO
9V
1 mA
2.5R
1R
5V
Vref
OSC
_
+
GOOD
LOGIC
INTERNAL
BIAS
S
Q
R
L.E.B
SFET
7.5V
+
_
27V
+
_
THERMAL S/D
S
Q
R
Rsens
POWER ON RESET
©2000 Fairchild Semiconductor International
DRAIN
GND
Rev. .5.0

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