PHILIPS Buk203-50X Data Sheet User Manual
Summary
This Philips Semiconductors BUK203-50X is a monolithic temperature and overload protected power switch. Designed as a high-side switch in a 5-pin SOT263 package, it supports up to 50V supply voltage and 4A load current. Ideal for driving lamps, motors, and heaters, it features low on-state resistance and robust protection like overtemperature and short-circuit detection.
Page 1 Text Content
查询BUK203-50X供应商 Philips Semiconductors Product specification
Power MOS transistor BUK203-50X TOPFET high side switch
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) 1.6
5 pin plastic envelope, configured as a single high side switch.
SYMBOL PARAMETER MAX. UNIT
APPLICATIONS
VBG Continuous off-state supply voltage
General controller for driving IL Continuous load current
lamps, motors, solenoids, heaters. Tj Continuous junction temperature ˚C
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 - SOT263 PIN CONFIGURATION SYMBOL PIN DESCRIPTION
Ground Input
TOPFET
Battery (+ve supply) HSS Status leadform
Fig. 2. Fig. 3.
tab connected to pin 3
April 1995 Rev 1.100
Page Summary Contents For PHILIPS Buk203-50X Data Sheet User Manual
Manual Details
| Brand | Philips |
|---|---|
| Pages | 13 |
| File Size | 123.20 KB |
| Published | June 22, 2026 |
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Frequently Asked Questions
What is the nominal load current for the BUK203-50X?
The nominal load current (ISO) is 1.6 A.
What is the maximum continuous off-state supply voltage?
The maximum continuous off-state supply voltage is 50 V.
Does the BUK203-50X include overtemperature protection?
Yes, it has overtemperature protection with self-reset hysteresis.
What is the typical on-state resistance at 13V?
The typical on-state resistance (R_ON) is 160 mΩ.