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KA5M0765RQCTU 데이터시트(PDF) 1 Page - Fairchild Semiconductor

부품명 KA5M0765RQCTU
상세설명  Fairchild Power Switch(SPS)
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제조업체  FAIRCHILD [Fairchild Semiconductor]
홈페이지  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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©2004 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.5
Features
• Precision Fixed Operating Frequency (70kHz)
• Low Start-up Current (Typ. 100
µA)
• Pulse by Pulse Current Limiting
• Over Load Protection
• Over Current Protection
• Over Voltage Protection (Min. 25V)
• Internal Thermal Shutdown Function
• Under Voltage Lockout
• Internal High Voltage Sense FET
• Auto-Restart Mode
Description
The Fairchild Power Switch(FPS) product family is specially
designed for an off line SMPS with minimal external
components. The Fairchild Power Switch(FPS) consist of high
voltage power SenseFET and current mode PWM IC. Included
PWM controller features integrated fixed frequency oscillator,
under voltage lock-out, leading edge blanking, optimized gate
turn-on/turn-off driver, thermal shutdown protection, over
voltage protection, and temperature compensated precision
current sources for loop compensation and fault protection
circuitry. compared to discrete MOSFET and PWM controller
or RCC solution, a Fairchild Power Switch(FPS) 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-220-5L
1. DRAIN 2. GND 3. VCC 4. FB 5. S/S
1
Internal Block Diagram
VOF F SE T
Sense
FET
15V/9V
UVLO
Vref
2.5R
5uA
R
1mA
Good Logic
INTERNAL
BIAS
LEB
+
++
+
-
S
R
Q
OSC
CLK
7.5V
Shutdown
Latch
Power-on Reset
/Auto-restart
Rsense
※ LEB : Leading Edge Blanking
※ OCL : Over Current Limit
Vcc
GND
Drain
+
++
+
-
14V
27V
+
++
+
-
OVP-out
OVP
S
R
Q
3
2
1
VCC
VREF
VOLTAGE
LIMIT
CIRCUIT
OLP
OCL
(VS=1.4V)
TSD
(TJ=150℃)
OVP-out
(VCC=27V)
VS
5V
Soft Start 5
Feedback 4
KA5M0765RQC
Fairchild Power Switch(FPS)


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