BUK220-50Y is a TOPFET high side switch produced by Philips Semiconductors. It is a monolithic single channel high side protected power switch in TOPFET2 technology assembled in a 5 pin plastic surface mount package.
The Philips BUK220-50Y is a monolithic single channel high side protected power switch utilizing TOPFET2 technology, assembled in a 5-pin plastic surface mount package (SOT426). It is designed as a general controller for driving lamps, motors, solenoids, and heaters, featuring low on-state resistance and CMOS logic compatibility.
The device includes comprehensive protection features such as overtemperature protection, load current limiting, latched overload and short circuit protection, and overvoltage/undervoltage shutdown with hysteresis. It also offers diagnostic status indication, voltage clamping for inductive loads, and ESD protection on all pins.
| Nominal load current (ISO) | 2 A |
|---|---|
| Continuous off-state supply voltage | 50 V |
| Continuous load current | 6 A |
| Continuous junction temperature | 150 ˚C |
| On-state resistance (Tj = 25˚C) | 180 mΩ |
| Input turn-on threshold voltage | 2.4 V |
| Status clamping voltage | 5.5 V |
| Undervoltage threshold | 4.2 V |
| Overvoltage threshold | 40 V |
| Load current limiting | 6 A |
The nominal load current according to ISO is 2 A.
Yes, it features latched overload and short circuit protection.
The continuous junction temperature is rated at 150 ˚C.