Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductors product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. Typical parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customers technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.www.fairchildsemi.com KA5x0165Rxx-SERIES KA5H0165R/RN, KA5M0165R/RN, KA5L0165R/RN, KA5H0165RVN Fairchild Power Switch(FPS) Features Description Precision Fixed Operating Frequency (100/67/50kHz ) The Fairchild Power Switch(FPS) product family is specially Low Start-up Current (Typ. 100uA) designed for an off-line SMPS with minimal external Pulse by Pulse Current Limiting components. The Fairchild Power Switch(FPS) consist of high Over Load Protection voltage power SenseFET and current mode PWM IC. Included Over Voltage Protection (Min. 25V) PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/ - except KA5H0165RVN turn-off driver, thermal shut down protection, over voltage Internal Thermal Shutdown Function protection, and temperature compensated precision current Under Voltage Lockout sources for loop compensation and fault protection circuitry Internal High Voltage Sense FET compared to discrete MOSFET and controller or R CC Auto-Restart Mode switching converter solution, The Fairchild Power Switch(FPS) can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability. It is well suited for cost effective design of flyback converters. TO-220F-4L 8-DIP 1 1 1.6.7.8. Drain 1. GND 2. GND 2. Drain 3. Vcc 3. Vcc 4. FB 4. FB 5. NC Internal Block Diagram V CC DRAIN 32V 5V Internal Vref bias SFET Good logic OSC S uA Q R FB L.E.B 2.5R 5 A 1mA + 1R 9V 0.1V + S GND 7.5V Q R + Thermal S/D Power on reset 27V OVER VOLTAGE S/D Rev.1.0.5 2003 Fairchild Semiconductor Corporation