5M0365R Datasheet – Power Switch – Fairchild ( PDF )

Part Number: 5M0365R, KA5M0365R

Function: Fairchild Power Switch(FPS)

Package: TO-220F-4L

Manufacturer: Fairchild Semiconductor, ON Semiconductor


5M0365R datasheet FPS


1. Precision Fixed Operating Frequency (100/67/50kHz)
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


5M0365R pinout



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

Ordering Information

5M0365R ordering information


• Precision Fixed Operating Frequency (100/67/50kHz)
• Low Start-up Current(Typ. 100uA)
• Pulse by Pulse Current Limiting
• Over Current Protection
• Over Voltage Protection (Min. 25V)


2. SMPS for Printer, Facsimile & Scanner
3. Adaptor for Camcorder

5M0365R Datasheet

KA5M0365R pdf


Related articles across the web

Other data sheets are available within the file: 5H0365R, 5HO365R, 5HO380R, 5M0365RN, 5MO365R

DH321 Datasheet PDF – Green Mode Fairchild Power Switch

Part Number: DH321

Function: Green Mode Fairchild Power Switch (FPS)

Package: DIP, SO 8 Pin Type

Manufacturer: Fairchild Semiconductor

DH321 fairchild switch


The DH321, FSDx321(x stands for H, L) are integrated Pulse Width Modulators (PWM) and Sense FETs specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components.


DH321 pinouts


• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with Advanced Burst-Mode Operation
• Frequency Modulation for low EMI
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse by Pulse Current Limiting
• Abnormal Over Current Protection
• Over Voltage Protection
• Over Load Protection
• Internal Thermal Shutdown Function
• Auto-Restart Mode
• Under Voltage Lockout
• Low Operating Current (max 3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start



DH321 Ordering Information

Both devices are integrated high voltage power switching regulators which combine an avalanche rugged Sense FET with a current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection, Abnormal Over Current Protection (AOCP) and temperature compensated precision current sources for loop compensation and fault protection circuitry.


Block Diagram

DH321 Datasheet

DH321 Datasheet PDF Download

DH321 pdf

Other data sheets are available within the file: DH-321, DL321, FSDH321, FSDH321L, FSDL321