Philips Semiconductors Product specification
TOPFET dual high side switch BUK218-50DC QUICK REFERENCE DATA
DESCRIPTION
Monolithic dual channel high side SYMBOL PARAMETER MIN. UNIT
protected power switch in
TOPFET2 technology assembled in ILNominal load current (ISO) 8 A
a 7 pin plastic surface mount
package. SYMBOL PARAMETER MAX. UNIT
APPLICATIONS VBG Continuous off-state supply voltage 50 V
General purpose switch for driving ILContinuous load current 16 A
lamps, motors, solenoids, heaters. TjContinuous junction temperature 150 ˚C
RON On-state resistance, Tj = 25˚C 40 mΩ
FEATURES FUNCTIONAL BLOCK DIAGRAM
Vertical power TrenchMOS
Low on-state resistance
CMOS logic compatible
Very low quiescent current
Overtemperature protection
Load current limiting
Overload and
short circuit protection
Self resetting overcurrent
protection
Overvoltage and undervoltage
shutdown with hysteresis
Off-state open circuit
load detection
Diagnostic status indication
Voltage clamping for turn off
of inductive loads
ESD protection on all pins
Reverse battery, overvoltage
and transient protection
Fig.1. Elements of the TOPFET dual HSS with internal ground resistor.
PINNING - SOT427 PIN CONFIGURATION SYMBOL
PIN DESCRIPTION
1 load 1
2 ground
3 input 1
4 connected to mb
5 status
6 input 2
7 load 2
mb battery Fig. 2. Fig. 3.
CONVENTION
Positive currents flow into pins, except for load and ground pins.
STATUS
GROUND
INPUT 2
RG
CONTROL &
PROTECTION
CIRCUITS
INPUT 1
LOAD 1
BATT
LOAD 2
1234567
mb
I1
I2
L1
L2
G
B
S
DUAL
HSTF
October 2001 1 Rev 2.010