5LO365R Datasheet PDF – Fairchild Power Switch (FPS)

Part Number: 5LO365R, 5L0365R, KA5x03xx-SERIES

Function: Fairchild Power Switch(FPS)

Package: DIP 8 pin Type

Manufacturer: Fairchild Semiconductor


5LO365R datasheet


Part Number 5LO365R -> Correct Part Number 5L0365R

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.

Included PWM controller integrates the fixed frequency oscillator, the under voltage lock-out, the leading edge blanking, the optimized gate turn-on/turn-off driver, the thermal shutdown protection, the over voltage protection, and the temperature compensated precision current sources for the loop compensation and the fault protection circuitry.

Compared to a discrete MOSFET and a PWM controller or an RCCsolution, a Fairchild Power Switch(FPS) can reduce the 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 the cost effective design in either a flyback converter or a forward converter.


Pinout and Block diagram



1. Precision Fixed Operating Frequency (67/50kHz)

2. Low Start-up Current(Typ. 100uA)

3. Pulse by Pulse Current Limiting

4. Over Current Protection

5. Over Voltage Protection (Min. 25V)

6. Internal Thermal Shutdown Function

7. Under Voltage Lockout

8. Internal High Voltage Sense FET

9. Auto-Restart Mode


Other data sheets are available within the file: 5L0365R, 5L0365RN, 5LO365RN, KA5L0365R

5LO365R Datasheet PDF Download

5LO365R pdf