Smart Two Channel Highside Power Switch
Description
PROFET® BTS 733 L1
Smart Two Channel Highside Power Switch
Features
• Overload protection • Current limitation • Short-circuit protection • Thermal shutdown • Overvoltage protection (including load dump) • Reverse battery protection1) • Undervoltage and overvoltage shutdown with auto-restart and hysteresis • Open drain diagnostic output • Open load detection in ON-state • CMOS compatible input • Loss of ground and loss of Vbb protection • Electrostatic discharge (ESD) protection
Product Summary Overvoltage Protection Operating voltage active channels: On-state resistance RON Nominal load current IL(NOM) Current limitation IL(SCr)
Vbb(AZ) Vbb(on) one 40 4.
8 21
43 V 5.
0 .
.
.
24 V two parallel 20 mΩ 7.
3 A 21 A
Application
• µC compatible power switch with diagnostic feedback for 12 V DC grounded loads • Most suitable for resistive and lamp loads • Replaces electromechanical relays, fuses and discrete circuits
General Description
N channel vertical power FET with charge pump, ground referenced CMOS compatible input and diagnostic feedback, monolithically integrated in Smart SIPMOS® technology.
Fully protected by embedded protection functions.
Pin Definitions and Functions Pin 1,10, 11,12, 15,16, 19,20 3 7 17,18 13,14 4 8 2 6 5,9 Symbol Function Positive power supply voltage.
Design the Vbb wiring for the simultaneous max.
short circuit currents from channel 1 to 2 and also for low thermal resistance IN1 Input 1,2, activates channel 1,2 in case of IN2 logic high signal OUT1 Output 1,2, protected high-side power output OUT2 of channel 1,2.
Design the wiring for the max.
short circuit current ST1 Diagnostic feedback 1,2 of channel 1,2, ST2 open drain, low on failure GND1 Ground 1 of chip 1 (channel 1) GND2 Ground 2 of chip 2 (channel 2) N.
C.
Not Connected Pin configuration (top view) Vbb GND1 IN1 ST1 N.
C.
GND2 IN2 ST2 N.
C.
Vbb 1 2 3 4 5 6 7 8 9 10
•
20 19 18 17 16 15 14 13 12 11
Vbb Vbb OUT1 OUT1 Vbb Vbb OUT2 OUT2 Vbb Vbb
1)
With external current limit (e.
g.
re...
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