Philips Semiconductors
Product specification
TOPFET high side switch
SMD version of BUK203-50X
DESCRIPTION
Monolithic temperature and
overload protected power switch
based on MOSFET technology in a
5 pin plastic surface mount
envelope, configured as a single
high side switch.
BUK207-50X
QUICK REFERENCE DATA
SYMBOL
I
L
SYMBOL
V
BG
I
L
T
j
R
ON
PARAMETER
Nominal load current (ISO)
PARAMETER
Continuous off-state supply voltage
Continuous load current
Continuous junction temperature
On-state resistance
MIN.
1.6
MAX.
50
4
150
220
UNIT
A
UNIT
V
A
藲C
m鈩?/div>
APPLICATIONS
General controller for driving
lamps, motors, solenoids, heaters.
FEATURES
Vertical power DMOS switch
Low on-state resistance
5 V logic compatible input
with hysteresis
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
with external ground resistor
FUNCTIONAL BLOCK DIAGRAM
BATT
STATUS
POWER
INPUT
MOSFET
CONTROL &
PROTECTION
CIRCUITS
LOAD
GROUND
Fig.1. Elements of the TOPFET HSS.
PINNING - SOT426
PIN
1
2
3
4
5
mb
DESCRIPTION
Ground
Input
(connected to mb)
Status
Load
Battery
PIN CONFIGURATION
mb
SYMBOL
I
S
3
1 2
4 5
B
TOPFET
HSS
G
L
Fig. 2.
Fig. 3.
July 1996
1
Rev 1.000
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