PHILIPS BUK205-50Y Data Sheet User Guide
Summary
The BUK205-50Y is a TOPFET high-side power switch from Philips in a SOT426 SMD package. Based on DMOS technology, it provides 6A nominal load current with 60mOhm on-state resistance. Features include 5V logic input, overtemperature protection with hysteresis, overload current limiting, undervoltage lockout, diagnostic status output, and inductive load voltage clamping. Designed for driving lamps, motors, solenoids, and heaters, it targets automotive and industrial engineers needing robust protected high-side drivers for power switching applications.
Page 1 Text Content
查询BUK205-50Y供应商 Philips Semiconductors Product specification
TOPFET high side switch BUK205-50Y SMD version of BUK201-50Y
DESCRIPTION QUICK REFERENCE DATA Monolithic temperature and SYMBOL PARAMETER MIN. UNIT overload protected power switch
based on MOSFET technology in a IL Nominal load current (ISO)
5 pin plastic surface mount envelope, configured as a single high side switch. SYMBOL PARAMETER MAX. UNIT
APPLICATIONS VBG Continuous off-state supply voltage
IL Continuous load current
General controller for driving Tj Continuous junction temperature ˚C lamps, motors, solenoids, heaters. RON On-state resistance mΩ
FEATURES FUNCTIONAL BLOCK DIAGRAM Vertical power DMOS switch Low on-state resistance 5 V logic compatible input
Overtemperature protection - self resets with hysteresis
STATUS
Overload protection against
POWER
short circuit load with output current limiting; MOSFET
latched - reset by input INPUT
CONTROL &
High supply voltage load protection
PROTECTION
Supply undervoltage lock out Status indication for overload
CIRCUITS
protection activated Diagnostic status indication
of open circuit load LOAD
Very low quiescent current
GROUND RG
Voltage clamping for turn off of inductive loads ESD protection on all pins Reverse battery and overvoltage protection Fig.1. Elements of the TOPFET HSS with internal ground resistor.
PINNING - SOT426 PIN CONFIGURATION SYMBOL PIN DESCRIPTION
Ground Input
TOPFET
(connected to mb) HSS
Status Load
Fig. 2. Fig. 3.
mb Battery
July 1996 Rev 1.000
Page Summary Contents For PHILIPS BUK205-50Y Data Sheet User Guide
Manual Details
| Brand | Philips |
|---|---|
| Pages | 13 |
| File Size | 131.04 KB |
| Published | July 04, 2026 |
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Frequently Asked Questions
What is the BUK205-50Y?
It is a SMD, 5-pin TOPFET high side switch based on MOSFET technology, the SMD version of BUK201-50Y.
What is the max continuous off-state supply voltage?
The maximum continuous off-state supply voltage is 50 V.
What is the typical on-state resistance at 13V?
The typical on-state resistance at 13V with 7.5A load is 45 mΩ.
Can this device be used in life support systems?
No, it is not designed for use in life support appliances, devices or systems.