PHILIPS BUK205-50X Data Sheet
Summary
This advanced MOSFET TOPFET functions as an overload-protected, high side switch ideal for powering motors, solenoids, and heaters. Engineered in a compact SMD package, it provides reliable power control with comprehensive integrated protection features, including overtemperature and undervoltage lockout. The accompanying manual offers detailed electrical specifications covering static characteristics, thermal limits, and advanced operating parameters necessary for professional engineers designing high-performance power management circuits.
Page 1 Text Content
查询BUK205-50X供应商 Philips Semiconductors Product specification
TOPFET high side switch BUK205-50X SMD version of BUK201-50X
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 with hysteresis
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
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 external 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 BUK205-50X Data Sheet
Manual Details
| Brand | Philips |
|---|---|
| Pages | 13 |
| File Size | 129.97 KB |
| Published | June 20, 2026 |
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Frequently Asked Questions
What is the function of pin 2 (Input) on the TOPFET?
Pin 2 (Input) accepts 5V logic signals to control switching according to the pinning diagram.
What is the maximum continuous load current rating?
Up to 15A continuous load current at mounting base temperature ≤115°C per Limiting Values.
What protections does this high-side switch offer?
Features include overload/short-circuit protection (self-resetting with latch) and overtemperature protection.
Is the input compatible with standard 5V logic?
Yes, FEATURES explicitly state "5V logic compatible input with hysteresis".
What thermal resistance should I expect?
Thermal resistance junction to mounting base is max 1.5 K/W.