TOPFET dual high side switch
Philips Semiconductors
Product specification
TOPFET dual high side switch
BUK218-50DC
QUICK REFERENCE DATA DESCRIPTI...
Description
Philips Semiconductors
Product specification
TOPFET dual high side switch
BUK218-50DC
QUICK REFERENCE DATA DESCRIPTION
Monolithic dual channel high side protected power switch in TOPFET2 technology assembled in a 7 pin plastic surface mount package. SYMBOL IL SYMBOL PARAMETER Nominal load current (ISO) PARAMETER Continuous off-state supply voltage Continuous load current Continuous junction temperature On-state resistance, Tj = 25˚C MIN. 8 MAX. 50 16 150 40 UNIT A UNIT V A ˚C mΩ
APPLICATIONS
General purpose switch for driving lamps, motors, solenoids, heaters. VBG IL Tj RON
FEATURES
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
FUNCTIONAL BLOCK DIAGRAM
INPUT 1 BATT INPUT 2
STATUS
CONTROL & PROTECTION CIRCUITS
LOAD 1
GROUND
RG
LOAD 2
Fig.1. Elements of the TOPFET dual HSS with internal ground resistor.
PINNING - SOT427
PIN 1 2 3 4 5 6 7 mb DESCRIPTION load 1 ground input 1 connected to mb status input 2 load 2 battery
PIN CONFIGURATION
mb
SYMBOL
B I1 L1
DUAL HSTF
I2 S G L2
1234567
Fig. 2.
Fig. 3.
CONVENTION
Positive currents flow into...
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