Product Brief

BTS 5231-2GS
Smart High-Side Power Switch
Two Channels 140 mΩ




    T H E B T S 5 2 3 1 - 2 G S is a dual channel high-side power switch (two     Diagnostic Features
times 140 mΩ) in PG-DSO-14 package providing embedded protective functions.       ■ Enhanced IntelliSense signal for each

                                                                                    channel
The enhanced IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic     ■ Enable function for diagnosis pins

feedback signal including current sense function and open load in OFF-state.        (IS1 and IS2)
The diagnosis signals can be switched ON and OFF by the sense enable pin SEN.     ■ Proportional load current sense signal

                                                                                    by current source
An integrated ground resistor as well as integrated resistors at each input pin   ■ High accuracy of current sense signal at

(IN1, IN2, SEN) reduce external components to a minimum.                            wide load current range
                                                                                  ■ Open load detection in ON-state by

The power transistor is built by a N-channel vertical power MOSFET with charge      load current sense
pump. The inputs are ground referenced CMOS compatible.                           ■ Over load (current limitation) diagnosis

The device is monolithically integrated in Smart SIPMOS technology.                 in ON-state by voltage source signal
                                                                                  ■ Latched over temperature diagnosis in

Applications                                                                        ON-state by voltage source signal
■ 12 V grounded high-side loads, µC compatible with diagnostic feedback           ■ Open load detection in OFF-state by

■ Suitable for automotive and industrial applications                               voltage source signal
■ All types of resistive, inductive and capacitive loads

■ Suitable for loads with high inrush currents, such as lamps                     Integrated Protection Features
■ Suitable for loads with low currents such as LEDs                               ■ Reverse battery
■ Replaces electromechanical relays, fuses and discrete circuits                  ■ Over voltage

                                                                                  ■ Short circuit

Basic Features                                                                    ■ Over load

■ Very low standby current                                                        ■ Loss of ground

■ 3.3 V and 5 V compatible logic pins                                             ■ Electrostatic discharge (ESD)

■ Improved electromagnetic compatibility (EMC)                                    ■ Multi step current limitation

■ Stable behavior at under voltage                                                ■ Thermal shutdown with restart at

■ Logic ground independent from load ground                                         reduced current limitation
■ Load turn-off while logic ground is disconnected

■ Optimized inverse current capability

■ Green Product (RoHS compliant)

■ AEC qualified




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Automotive Power

Product Brief Block Diagram Channel 1 Vbb Load Current Clamp for Sense Inductive Load Internal Gate Control & Power Charge Pump Supply Multi Step Logic Open Load Load Current OUT1 Detection Limitation IN1 ESD Temperature Sensor IS1 Protection SEN Over Load Detection Channel 2 IN2 Control and Protection Circuit IS2 Equivalent to Channel 1 RGND OUT2 GND Product Summary Type Description Package BTS 5231-2GS 2 x 140 mΩ PG-DSO-14 Parameter Value Unit Operating voltage Vbb(on) 4.5 ... 28 V Over voltage protection Vbb(AZ) 41 V ON-state resistance RDS(0N) 140 mΩ Nominal load current (one channel active) IL(nom) 1.8 A Current limitation IL(LIM) 8A Current limitation repetitive IL(SCr) 3A Standby current for whole device with load Ibb(OFF) 2.5 µA Application Example 10 W Bulb Vbb GND (e.g. Puddle Lamp) LED Cluster (e.g. Side Marker) OUT1 BTS 5231-2GS OUT2 IN1 IS1 SEN IS2 IN2 µC How to reach us: Legal Disclaimer Warnings http://www.infineon.com The information given in this Product Brief shall in no event be Due to technical requirements, components may contain regarded as a guarantee of conditions or characteristics. With dangerous substances. For information on the types in question, Published by respect to any examples or hints given herein, any typical values please contact the nearest Infineon Technologies Office. Infineon Technologies AG stated herein and/or any information regarding the application of 81726 Munich, Germany Infineon Technologies components may be used in life-support the device, Infineon Technologies hereby disclaims any and all devices or systems only with the express written approval of © 2007 Infineon Technologies AG warranties and liabilities of any kind, including without limitation, Infineon Technologies, if a failure of such components can All Rights Reserved. warranties of non-infringement of intellectual property rights of reasonably be expected to cause the failure of that life-support any third party. device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended Information to be implanted in the human body or to support and/or main- For further information on technology, delivery terms and tain and sustain and/or protect human life. If they fail, it is conditions and prices, please contact the nearest reasonable to assume that the health of the user or other Infineon Technologies Office (www.infineon.com). persons may be endangered. Ordering No. B112-H9067-X-X-7600 Published by Infineon Technologies AG NB07-1169