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KA1H0380RB-TU Datasheet

  • KA1H0380RB-TU

  • Fairchild Power Switch(SPS)

  • 12頁

  • FAIRCHILD

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www.fairchildsemi.com
KA1L0380B/KA1L0380RB/KA1M0380RB/
KA1H0380RB
Fairchild Power Switch(SPS)
Features
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Precision fixed operating frequency
KA1L0380B/KA1L0380RB
(50KHz)
KA1M0380RB
(67KHz)
KA1H0380RB
(100KHz)
Pulse by pulse over current limiting
Over load protection
Over voltage protection (Min. 23V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
Auto restart (
KA1L0380RB/KA1M0380RB/KA1H0380RB)
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 either a flyback converter or a
forward converter.
TO-220F-4L
1
1. GND 2. DRAIN 3. V
CC
4. FB
Internal Block Diagram
#3 V
CC
32V
5V
Vref
Good
logic
OSC
9V
5碌A(chǔ)
#4 FB
2.5R
1R
+
7.5V
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+
25V
鈭?/div>
Thermal S/D
OVER VOLTAGE S/D
1mA
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+
0.1V
S
R
Q
#1 GND
S
R
L.E.B
Q
Internal
bias
#2 DRAIN
SFET
Power on reset
Rev. .5.0
漏2000 Fairchild Semiconductor International

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