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
I
L
Nominal load current (ISO)
6
A
5 pin plastic surface mount
envelope, configured as a single
high side switch.
SYMBOL
PARAMETER
MAX.
UNIT
APPLICATIONS
V
BG
Continuous off-state supply voltage
50
V
I
L
Continuous load current
15
A
General controller for driving
T
j
Continuous junction temperature
150
˚C
lamps, motors, solenoids, heaters.
R
ON
On-state resistance
60
m
Ω
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Vertical power DMOS switch
Low on-state resistance
5 V logic compatible input
Overtemperature protection -
self resets with hysteresis
Overload protection against
short circuit load with
output current limiting;
latched - reset by input
High supply voltage load
protection
Supply undervoltage lock out
Status indication for overload
protection activated
Diagnostic status indication
of open circuit load
Very low quiescent current
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
1
Ground
2
Input
3
(connected to mb)
4
Status
5
Load
Fig. 2.
Fig. 3.
mb
Battery
BATT
LOAD
INPUT
GROUND
STATUS
POWER
MOSFET
RG
CONTROL &
PROTECTION
CIRCUITS
mb
1 2
4 5
3
B
G
L
I
S
HSS
TOPFET
July 1996
1
Rev 1.000
