參數(shù)資料
型號(hào)： KA5Q0740RT
廠商： Fairchild Semiconductor Corporation
英文描述： Fairchild Power Switch(FPS)
中文描述： 飛兆半導(dǎo)體功率開關(guān)（FPS）
文件頁(yè)數(shù)： 1/12頁(yè)
文件大小： 284K
代理商： KA5Q0740RT
2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.4
Features
Quasi Resonant Converter Controller
Internal Burst Mode Controller for Stand-by Mode
Pulse by Pulse Current Limiting
Over Current Latch Protection
Over Voltage Protection (Vsync: Min. 11V)
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) consists of a
high voltage power SenseFET and a current mode PWM IC.
The integrated PWM controller includes the fixed oscillator,
the under voltage lock out, the leading edge blanking, the
optimized gate turn-on/turn-off driver, the thermal shut down
protection, the over voltage protection, and the temperature
compensated precision current sources for loop compensation
and fault protection circuitry. Compared to a discrete
MOSFET and a controller or a RCC switching converter
solutions, a Fairchild Power Switch(FPS) can reduce the total
number of components, design size, and weight, so it will
improve efficiency, productivity, and system reliability. It has
a basic platform well suited for cost-effective design in a
quasi-resonant converter as a C-TV power supply.
TO-220F-5L
1. Drain 2. GND 3. V
CC
4. Feedback 5. Sync
Internal Block Diagram
-
+
Rsense
11V on
12V off
3
1
2
4
VREF
Internal
BIAS
S
Q
R
LEB
450ns
S
QB
R
Ro
n
Ron
Roff
Power
on
Reset
OVP
OLP
7.5V
-
+
12V
Sync
-
+
-
+
UVLO
15V/9V
5
Burst Mode
3.5V/1.25V
SYNC
-
+
R
2.5R
-
+
-
+
Offset
Thermal
Shut Down
S
Q
R
Power on Reset
(VCC=6.5V)
Delay
80ns
1V
-
+
OCL
1V
FEEDBACK
VCC
DRAIN
SOURCE
Normal Mode
4.6V/2.6V
OSC
-
+
-
+
Idelay
Ifb
VREF
32V 1%
K A5Q0740RT
Fairchild Power S witch(FPS)
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KA5Q0740RT_04 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Fairchild Power Switch(FPS)
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KA5Q0765 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Fairchild Power Switch(FPS)
KA5Q0765RT 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Fairchild Power Switch(FPS)
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