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Current Limit Switch for Automotive Applications


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Overview of BTS428L2ATMA1

The BTS428L2ATMA1 is a high-side power switch with integrated protection features,making it suitable for various automotive and industrial applications.This device offers a compact and efficient solution for controlling high-current loads in a safe and reliable manner.


(Note:The pin configuration below is a general representation.Refer to the specific datasheet for precise details.)

  • IN:Input Control Pin
  • PGND:Power Ground
  • S:Status Feedback Pin
  • SS:Soft-Start Pin
  • DIR:Diagnostic Output
  • OC:Overcurrent Protection
  • Vbb:Voltage Supply
  • OUT:Output
  • VBAT:Battery Supply
  • GND:Ground
  • RST:Reset Pin

Circuit Diagram

Incorporate a circuit diagram that illustrates the connections and operation of the BTS428L2ATMA1 for a more visual representation.

Key Features

  • Integrated Protection Features:The BTS428L2ATMA1 includes various protection mechanisms such as overcurrent and overvoltage protection,ensuring the safety of connected loads and the device itself.
  • High Current Capability:This power switch is capable of handling high continuous and pulsed currents,making it suitable for demanding applications.
  • Diagnostic and Status Feedback:The device provides diagnostic feedback and status information,allowing for efficient fault detection and system monitoring.
  • Wide Supply Voltage Range:With a wide voltage supply range,this device is compatible with various automotive and industrial power systems.

Note:For detailed technical specifications,please refer to the BTS428L2ATMA1 datasheet.


  • Automotive Systems:The BTS428L2ATMA1 is commonly used in automotive systems for controlling loads such as lamps,motors,and heaters.
  • Industrial Control:The device is suitable for industrial control applications where high-side switching and protection are required.
  • Power Distribution:It can be used in power distribution systems for protecting and controlling high-current loads.


The BTS428L2ATMA1 acts as a high-side power switch with integrated protection and diagnostic features,enabling safe and efficient control of high-current loads in automotive and industrial applications.

Usage Guide

  • Power Supply:Connect the Vbat and Vbb pins to the appropriate power supplies as specified in the datasheet.
  • Load Connection:Connect the load to the OUT pin of the device.
  • Control Signal:Apply the control signal to the IN pin to switch the high-side power switch on or off.
  • Monitoring:Utilize the diagnostic and status feedback features for monitoring the operation of the device and detecting faults.

Frequently Asked Questions

Q:What is the maximum continuous current rating of the BTS428L2ATMA1?
A:The device is capable of handling continuous currents up to a certain specified limit,as detailed in the datasheet.

Q:Does the BTS428L2ATMA1 have built-in overcurrent protection?
A:Yes,the device integrates overcurrent protection to safeguard connected loads and the switch itself.


For similar functionalities,consider these alternatives to the BTS428L2ATMA1:

  • BTS500851TMA:A high-side power switch with similar protection and diagnostic features,designed for automotive applications.
  • BTS6143D:A power switch with integrated protection and status feedback,offering similar functionality for high-side switching applications.
  • BTS50015-1TMA:A high-current power switch with comprehensive protection features for automotive and industrial use.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

functionalPacking TAPE & REEL msl 1
halogenFree yes customerInfo STANDARD
fgr B09 productClassification ASP
productStatusInfo active and preferred hfgr C
packageName PG-TO252-5 pbFree yes
moistureProtPack NON DRY orderingCode SP000506234
fourBlockPackageName PG-TO252-5-11 rohsCompliant yes
opn BTS428L2ATMA1 completelyPbFree no
sapMatnrSali SP000506234

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