The document introduces the Fairchild Power Switch(FPS) product features, including precision fixed operating frequency, pulse-by-pulse overcurrent limiting, overload protection, overvoltage protection (min. 23V), internal thermal shutdown function, undervoltage lockout, internal high voltage sense FET and auto restart.
This document is a datasheet for the Fairchild Power Switch(FPS) family, specifically the KA1M0280RB (67kHz) and KA1H0280RB (100kHz) models. These devices are high-voltage power SenseFET and current mode PWM controller ICs designed for off-line switch-mode power supplies (SMPS) with minimal external components. They are suitable for use in flyback or forward converter topologies.
| Maximum Drain Voltage | 800 V |
|---|---|
| Continuous Drain Current (25°C) | 2.0 A |
| Operating Frequency (KA1M0280RB) | 67 kHz |
| Operating Frequency (KA1H0280RB) | 100 kHz |
| Operating Ambient Temperature | -25 to +85 °C |
| Package Type | TO-220F-4L |
The KA1M0280RB operates at 67kHz and the KA1H0280RB operates at 100kHz.
The maximum drain voltage rating is 800V.
The continuous drain current at 25°C is 2.0A.