5L0365R Power Switch IC DIP-8
The 5L0365R in the KA5x03xx family is a compact Fairchild Power Switch (FPS) IC integrating a high-voltage SenseFET with a current-mode PWM controller in an 8-pin DIP package. Designed for offline switched-mode power supplies, it reduces component count by combining the MOSFET and control circuitry into a single chip, simplifying design and saving board space for compact consumer products.
The internal controller integrates a fixed-frequency oscillator, under-voltage lockout, leading-edge blanking, optimized gate drive, thermal shutdown, over-voltage protection and temperature-compensated bias sources for loop compensation and fault management. These integrated protections and control functions create a resilient platform for flyback and forward converter topologies, improving system reliability and reducing EMI while easing compliance with safety and electromagnetic standards.
Requiring minimal external components, the 5L0365R suits low-power designs where efficiency, size and bill-of-materials reduction matter. The DIP-8 through-hole package simplifies prototyping and repair, while the FPS architecture offers predictable start-up, steady-state and fault behavior, clearer thermal characteristics, and faster time-to-market. It also streamlines PCB layout, lowers assembly cost through reduced part count, and supports reliable long-term operation.
Features:
- Precision Fixed Operating Frequency (100/67/50 kHz).
- Low Start-up Current (Typ. 100 µA).
- Pulse-by-Pulse Current Limiting.
- Over Current Protection.
- Over Voltage Protection (Min. 25 V).
- Internal Thermal Shutdown Function.
- Under Voltage Lockout.
- Internal High Voltage Sense FET.
- Auto-Restart Mode.
Specifications:
| Specification | Value |
|---|---|
| Maximum Drain Voltage (VD,MAX): | 650 V |
| Drain-Source Breakdown Voltage (BVDSS): | 650 V |
| Fixed Operating Frequency (FOSC): | 50 kHz |
| Drain-Source On-Resistance RDS(on): | 3.6 Ω, 4.5 Ω (maximum) |
| Continuous Drain Current (Ta = 25 °C): | 0.42 A |
| Continuous Drain Current (Ta = 100 °C): | 0.28 A |
| Single Pulsed Avalanche Energy (EAS): | 127 mJ |
| Total Power Dissipation (PD): | 1.56 W |
| Power Derating: | 0.0125 W/°C |
| Maximum Supply Voltage (VCC): | 30 V |
| Peak Current Limit: | 2.15 A |
| Start-Up Threshold Voltage: | 15 V |
| Over-Voltage Protection Threshold: | 25–29 V |
| Maximum Junction Temperature: | 160 °C |
| Operating Ambient Temperature: | −25 °C to +85 °C |
| Input Capacitance (Ciss): | 314.9 pF |
Applications:
- SMPS for VCR, SVR, STB, DVD & DVCD.
- SMPS for Printer, Facsimile & Scanner.
- Adaptor for Camcorder.
Package Contents:
- 1x 5L0365R Power Switch IC DIP-8