BUK204-50Y is a high side switch produced by Philips Semiconductors. It has 5V logic compatible input, low on-state resistance, overtemperature protection, overcurrent protection, high supply voltage load protection, power undervoltage lockout, status indication, diagnostic status indication, very low quiescent current, voltage clamping and other features.
The document is a product specification for the TOPFET high side switch model BUK204-50Y. It details the device's features, including low on-state resistance, 5 V logic compatible input, and built-in protections such as overtemperature, overload, supply undervoltage lockout, and voltage clamping for inductive loads.
The datasheet provides comprehensive technical data, including limiting values, static characteristics (clamping voltages, currents, resistances), protection functions with truth tables, dynamic characteristics, switching times, capacitances, and thermal properties. It also includes application information regarding the status output pin configuration. This manual is written in Chinese.
| Nominal load current (ISO) | 3.5 A |
|---|---|
| Continuous off-state supply voltage | 50 V |
| Continuous load current | 10 A |
| Continuous junction temperature | 150 °C |
The status output is an open drain transistor that requires an external pull-up circuit to indicate a logic high. It indicates normal operation, open-circuit load, overtemperature, short circuit load, and supply voltage faults.
The device switches off when the junction temperature reaches the trip threshold (typically 150 °C). The status remains low to indicate the fault even if the input is taken low, until the device cools below the reset temperature.