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KA1H0380RB-TU fiches techniques PDF

Fairchild - Fairchild Power Switch(SPS)

Numéro de référence KA1H0380RB-TU
Description Fairchild Power Switch(SPS)
Fabricant Fairchild 
Logo Fairchild 





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KA1H0380RB-TU fiche technique
www.fairchildsemi.com
KA1L0380B/KA1L0380RB/KA1M0380RB/
KA1H0380RB
Fairchild Power Switch(SPS)
Features
• 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
Internal Block Diagram
1
1. GND 2. DRAIN 3. VCC 4. FB
#3 VCC
#4 FB
32V 5V Internal
Vref bias
Good
logic
5µA
7.5V
25V
9V
1mA
2.5R
1R
+
OSC
+
S
Q
R
L.E.B
0.1V
+ Thermal S/D
OVER VOLTAGE S/D
S
Q
R
Power on reset
©2000 Fairchild Semiconductor International
SFET
#2 DRAIN
#1 GND
Rev. .5.0

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