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PDF ( 数据手册 , 数据表 ) 5Q1265RT

零件编号 5Q1265RT
描述 KA5Q1265RT
制造商 Fairchild
LOGO Fairchild LOGO 


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5Q1265RT 数据手册, 描述, 功能
Preliminary
KA5Q1265RT
SPS
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 oscillator, under
voltage lock out, leading edge blanking, optimized gate turn-on/turn-
off driver, thermal shut down protection, over voltage protection, and
temperature compensated precision current sources for loop
compensation and fault protection circuitry. Compared to discrete
MOSFET and controller or RCC switching converter solution, a SPS
can reduce total component count, design size, and weight and at
the same time increase efficiency, productivity, and system reliability.
It has a basic platform well suited for cost-effective design in Quasi-
Resonant Converter as C-TV power supply.
TO-220F-5L
SPS
1. Drain 2. GND 3. VCC 4. FB 5. Sync
FEATURES
ORDERING INFORMATION
• 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
Device
KA5Q1265RT
Package
TO-220F-5L
Topr (°C)
25°C to +85°C
BLOCK DIAGRAM

Sync.
+
PSR
REF.
Burst mode
controller
Internal
Bias
Vref
REF.
5+
OSC
S_
Q
R
OVP
+
4
1.7R
Ifb R
LEB
PWM
+
Ids Vz
Vds
REF.
+
TSD
150oC
Vfb offset
Power-on
Reset
S
Q
R
Delay
500nS
3
UVLO
Ron
Roff
+
OCL
REF.
1
Rsense
2
REV. B
1999 Fairchild Semiconductor Corporation












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