The document describes a specially designed offline switch mode power supply module (SPS) with precision fixed operating frequency and various protection features. The SPS consists of a high voltage power SenseFET and a current mode PWM controller IC, which can reduce component count, design size, and weight, while increasing efficiency, productivity, and system reliability.
This datasheet details the electrical characteristics, absolute maximum ratings, and typical performance of Fairchild's KA1L0380B/KA1L0380RB/KA1M0380RB/KA1H0380RB Power Switch(SPS) devices. These are high-voltage power SenseFET and current mode PWM controllers designed for off-line SMPS applications. The datasheet includes specifications for operating frequency, over-current protection, thermal shutdown, and voltage protection. It also provides package dimensions for the TO-220F-4L package and performance graphs normalized at 25°C.
The devices are intended for use in flyback or forward converters and offer features such as pulse-by-pulse over-current limiting, under-voltage lockout, and optimized gate drivers. The datasheet includes electrical characteristics for both the SFET and CONTROL sections, with parameters like drain-source breakdown voltage, gate-source capacitance, and reference voltage stability.
| Drain-source breakdown voltage | 800 V |
|---|---|
| Continuous drain current (Tc=25°C) | 3.0 A |
| Operating temperature | -25 to +85 °C |
| Reference voltage | 5.00 V |
| Start threshold voltage | 15 V |
| Over voltage protection voltage | 25 V |
| Thermal shutdown temperature | 160 °C |
| Package | TO-220F-4L |
The operating frequency for KA1L0380B is 50 kHz.
The maximum drain-source breakdown voltage is 800 V.
The thermal shutdown temperature is 160 °C.
The package type is TO-220F-4L.