ka5h0265r Fairchild Semiconductor, ka5h0265r Datasheet

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ka5h0265r

Manufacturer Part Number
ka5h0265r
Description
Smps Controller
Manufacturer
Fairchild Semiconductor
Datasheet

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KA5H0265R
S P S
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, 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.
FEATURES
BLOCK DIAGRAM
1999 Fairchild Semiconductor Corporation
Precision fixed operating frequency (100kHz)
Pulse by pulse current limiting
Over current protection
Over voltage protection (Min. 25V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
Auto-restart mode




 

 


  
7.5V
uA






 

   


THERMAL S/D
 


 


 




ORDERING INFORMATION

 
    
KA5H0265R
 
Device



TO -22 0F -4L
 !
TO-220F-4L
1. GND 2. Drain 3. Vcc 4. FB
Package

    


DRAIN



   
25 C to +85 C
Topr ( C)
S P S
REV. B

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ka5h0265r Summary of contents

Page 1

... Over voltage protection (Min. 25V) • Internal thermal shutdown function • Under voltage lockout • Internal high voltage sense FET • Auto-restart mode BLOCK DIAGRAM          uA        7.  1999 Fairchild Semiconductor Corporation ORDERING INFORMATION Device KA5H0265R                            THERMAL S/D          -22 0F -4L 1. GND 2. Drain 3. Vcc 4. FB Package Topr ( C) ...

Page 2

... KA5H0265R ABSOLUTE MAXIMUM RATINGS Characteristic (1) Drain-source (GND) voltage Drain-Gate voltage (R = Gate-source (GND) voltage (2) Drain current pulsed Single pulsed avalanche energy (4) Avalanche current Continuous drain current (T = Continuous drain current (T =100 C) C Supply voltage Analog input voltage range Total power dissipation ...

Page 3

... KA5H0265R ELECTRICAL CHARACTERISTICS (SFET part) (Ta=25 C unless otherwise specified) Characteristic Drain-source breakdown voltage Zero gate voltage drain current Static drain-source on resistance (note) Forward transconductance Input capacitance Output capacitance Reverse transfer capacitance Turn on delay time Rise time Turn off delay time Fall time ...

Page 4

... KA5H0265R ELECTRICAL CHARACTERISTICS (Control part) (Ta=25 C unless otherwise specified) Characteristic REFERENCE SECTION (1) Output voltage (1)(2) Temperature Stability OSCILLATOR SECTION Initial accuracy Frequency change with temperature PWM SECTION Maximum duty cycle FEEDBACK SECTION Feedback source current Shutdown delay current OVER CURRENT PROTECTION SECTION Over current protection ...

Page 5

... KA5H0265R LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, ...

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