Siemens BTS 725 L1 User Manual and Service Handbook (1), (1)

PROFET® Preliminary BTS 725 L1

Smart Two Channel Highside Power Switch

Product Summary Features Overvoltage Protection Vbb(AZ)

• Overload protection Vbb(on) 5.0 ... 24

Operating voltage

• Current limitation

active channels: one two parallel

• Short-circuit protection

On-state resistance RON mΩ

• Thermal shutdown

• Overvoltage protection Nominal load current IL(NOM) 4.0 6.0 (including load dump) Current limitation IL(SCr)

• 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

Application • µC compatible power switch with diagnostic feedback for 12 V DC grounded loads • Most suitable for resistive and lamp loads • Replaces electromechanical relays 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 Symbol Function

Pin configuration (top view)

1,10, Vbb Positive power supply voltage. Design the 11,12, wiring for the simultaneous max. short circuit

Vbb 1 • Vbb

15,16, currents from channel 1 to 2 and also for low

19,20 thermal resistance GND1 Vbb IN1 Input 1,2, activates channel 1,2 in case of IN1 OUT1 IN2 logic high signal ST1 OUT1 17,18 OUT1 Output 1,2, protected high-side power output N.C. Vbb 13,14 OUT2 of channel 1,2. Design the wiring for the max. GND2 Vbb

short circuit current IN2 OUT2

ST1 Diagnostic feedback 1,2 of channel 1,2, ST2 OUT2 ST2 open drain, low on failure N.C. Vbb GND1 Ground 1 of chip 1 (channel 1)

Vbb Vbb

GND2 Ground 2 of chip 2 (channel 2)

5,9 N.C. Not Connected

1) With external current limit (e.g. resistor RGND=150 Ω) in GND connection, resistor in series with ST connection, reverse load current limited by connected load.

Semiconductor Group 03.96