1L0380R Datasheet PDF – Fairchild Power Switch (FPS)

Part Number: 1L0380R

Function: Fairchild Power Switch(FPS)

Package: TO-220F-4L type

Manufacturer: Fairchild Semiconductor


1L0380R datasheet



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 control ler IC. 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, temperature compensated precision current sources for loop compensation and fault protection circuit.

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.



1. Precision fixed operating frequency

2. KA1L0380B / KA1L0380RB (50KHz)

3. KA1M0380RB (67KHz)

4. KA1H0380RB (100KHz)

5. Pulse by pulse over current limiting

6. Over load protection

7. Over voltage protection (Min. 23V)

8. Internal thermal shutdown function

9. Under voltage lockout

10. Internal high voltage sense FET

11. Auto restart (KA1L0380RB / KA1M0380RB / KA1H0380RB)


Other data sheets are available within the file:

1H0380RB-TU, 1H0380RB-YDTU, 1L0380B-TU, 1L0380B-YDTU, 1H0380RB, 1H0380R,

KA1L0380RB, KA1L0380B, 1LO380R, KA1M0380RB, KA1H0380RB, 1M0380R, 1M0380RB


1L0380R Datasheet PDF Download

1L0380R pdf