PHILIPS BUK202-50X Data Sheet
Summary
The BUK202-50X is a specialized TOPFET high side switch designed for robust power switching applications, offering integrated overload and overtemperature protection. This component controls high-power loads such as lamps, motors, solenoids, and heaters while maintaining an extremely low on-state resistance. The manual provides comprehensive technical specifications, detailing operational limits, static parameters, and current characteristics necessary for reliable circuit design. Ideal for engineers and designers requiring a high-performance MOSFET solution with built-in safety features like undervoltage lockout and ESD protection.
Page 1 Text Content
查询BUK202-50X供应商 Philips Semiconductors Product specification
Power MOS transistor BUK202-50X 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)
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 263-01
Fig. 2. Fig. 3.
tab connected to pin 3
April 1995 Rev 1.100
Page Summary Contents For PHILIPS BUK202-50X Data Sheet
Manual Details
| Brand | Philips |
|---|---|
| Pages | 13 |
| File Size | 125.26 KB |
| Published | July 04, 2026 |
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Frequently Asked Questions
What is the intended function of the BUK202-50X transistor?
It is an overload protected power switch based on MOSFET technology, configured as a single high side switch.
What kind of voltages and currents does this TOPFET handle?
It offers continuous off-state supply voltage up to 50 V and can handle continuous load current up to 20 A.
How is the device protected against various failures?
Features include overtemperature protection, overload protection, and ESD protection on all pins.
What kind of external components are required for safe operation?
Reverse battery voltage requires an external ground and input/status resistors to limit currents to a safe value.