5L0365R Power Switch IC DIP-8

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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 Datasheet