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BTS426L1

Smart Highside Power Switch

Infineon Technologies 

Smart Highside Power Switch

Features

• Overload protection

• Current limitation

• Short circuit protection

• Thermal shutdown

• Overvoltage protection (including load dump)

• Fast demagnetization of inductive loads

• 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

PROFET® BTS426L1

Product Summary

Overvoltage protection

Operating voltage

On-state resistance

Load current (ISO)

Current limitation

Vbb(AZ)

Vbb(on)

RON

IL(ISO)

IL(SCr)

43 V

5.0 ... 34 V

60 mΩ

7.0 A

16 A

TO-220AB/5

5

Standard

5

1

Straight leads

5

1

SMD

Application

• µC compatible power switch with diagnostic feedback for 12 V and 24 V DC grounded loads

• All types of resistive, inductive and capacitve 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. Providing embedded protective functions.

2 IN

Voltage

source

V Logic

Voltage

sensor

ESD

4 ST

Logic

Overvoltage

protection

Current

limit

Gate

protection

+ Vbb 3

Charge pump

Level shifter

Rectifier

Limit for

unclamped

ind. loads

Open load

Short to Vbb

detection

GND

1

Signal GND

OUT

5

Temperature

sensor

Load

RO

GND

PROFET

Load GND

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

1 of 14

2003-Oct-01

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