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BTS737S3 Dataheets PDF



Part Number BTS737S3
Manufacturers Infineon Technologies AG
Logo Infineon Technologies AG
Description Smart High-Side Power Switch
Datasheet BTS737S3 DatasheetBTS737S3 Datasheet (PDF)

Datasheet BTS737S3 Smart High-Side Power Switch Four Channels: 4 x 35mΩ Advanced Current Sense Product Summary Operating Voltage Vbb(on) Active channels one On-state Resistance RON 35mΩ Nominal load current IL(NOM) 5.4A Current limitation IL(SCr) 40A 5.0 ...40V four parallel 9mΩ 11.1A 40A Package P-DSO-28 General Description • • N channel vertical power MOSFET with charge pump, ground referenced CMOS compatible input and diagnostic feedback, monolithically integrated in Smart SIPMOS technolog.

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Datasheet BTS737S3 Smart High-Side Power Switch Four Channels: 4 x 35mΩ Advanced Current Sense Product Summary Operating Voltage Vbb(on) Active channels one On-state Resistance RON 35mΩ Nominal load current IL(NOM) 5.4A Current limitation IL(SCr) 40A 5.0 ...40V four parallel 9mΩ 11.1A 40A Package P-DSO-28 General Description • • N channel vertical power MOSFET with charge pump, ground referenced CMOS compatible input and diagnostic feedback, monolithically integrated in Smart SIPMOS technology. Providing embedded protective functions Applications • • • • µC compatible high-side power switch with diagnostic feedback for 12V and 24V grounded loads All types of resistive and capacitve loads Most suitable for loads with high inrush currents, so as lamps Replaces electromechanical relays, fuses and discrete circuits Basic Functions • • • • • Very low standby current Improved electromagnetic compatibility (EMC) CMOS compatible input Stable behaviour at undervoltage Wide operating voltage range Protection Functions • • • • • • • • Short circuit protection Overload protection Current limitation Thermal shutdown Reverse battery protection with external resistor Overvoltage protection with external resistor (incl. load dump) Loss of ground protection Electrostatic discharge protection (ESD) Block Diagram Vbb IN1 IS1 IS2 IN2 Load 2 IN3 IS3 IS4 IN4 Logic Channel 3 Channel 4 Logic Channel 1 Channel 2 Load 1 Diagnostic Function • Proportional load current sense (with defined fault signal during thermal shutdown and current limit) Load 3 GND Load 4 Infineon technologies 1 of 15 2004-Feb-19 Datasheet BTS737S3 Functional diagram overvoltage protection internal voltage IN1 logic gate control + charge pump current limit VBB clamp for inductive load OUT1 ESD IS1 temperature sensor Proportional sense current LOAD . channel 1 IN2 IS2 GND1/2 control and protection circuit of channel 2 OUT2 IN3 IS3 control and protection circuit of channel 3 OUT3 IN4 IS4 GND3/4 control and protection circuit of channel 4 OUT4 Infineon technologies 2 2004-Feb-19 Datasheet BTS737S3 Pin Definitions and Functions Pin Symbol Function 1, 7, 8, Vbb Positive power supply voltage. Design the 14, wiring for the simultaneous max. short circuit 15, 28 currents from channel 1 to 4 and also for low thermal resistance 4 IN1 Input 1,2, 3,4 activates channel 1,2,3,4 in case of logic high signal 3 IN2 11 IN3 10 IN4 25,26,27 OUT1 Output 1,2,3,4 protected high-side power output 22,23,24 OUT2 of channel 1,23,4. Design the wiring for the 19,20,21 OUT3 max. short circuit current 16,17,18 OUT4 5 IS1 Diagnostic feedback 1 .. 4 of channel 1 to 4 Providing a sense current, proportional to the 6 IS2 load current 12 IS3 13 IS4 2 GND1/2 Ground of chip 1 (channel 1,2) 9 GND3/4 Ground of chip 2 (channel 3,4) Pin configuration (top view) Vbb 1 GND1/2 IN2 IN1 IS1 IS2 Vbb GND3/4 IN4 IN3 IS3 IS4 Vbb 2 3 4 5 6 7 9 10 11 12 13 14 • 28 Vbb 27 26 25 24 23 22 20 19 18 17 16 15 OUT1 OUT.


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