STEF12SPUR

Current Regulation/Management Overview

The STEF12SPUR is an integrated electronic fuse from the STEF12S series, optimized for monitoring 12 V DC power lines. It detects and reacts to overcurrent and overvoltage conditions when connected in series to the main power rail. The device features a typical output overvoltage clamp of 15 V and an absolute maximum voltage of 25 V. It includes an integrated 40 mΩ Power FET and operates within a temperature range of -40 °C to 125 °C. Available in DFN10 (3x3 mm) packages, it supports latch or autoretry versions.

Current Regulation/Management Feature Summary

• Precise detection and reaction to overcurrent and overvoltage conditions on 12 V DC power lines
• Integrated 40 mΩ Power FET with adjustable current limit and thermal protection
• Input undervoltage lockout and low inrush current during startup
• Gate control pin for reverse current blocking FET

Current Regulation/Management Applications

• Monitoring 12 V DC power lines
• Overcurrent and overvoltage protection in electronic circuitry
• Hot swap operations with in-rush current control

Current Regulation/Management Procurement Notes

Verify the specific package variant (DFN10 or TSOT23-8L) as both are listed for the STEF12S series. Confirm whether the part number suffix indicates the latch or autoretry version. Ensure compliance with industrial grade requirements (-40 °C to 125 °C). Check for UL2367 recognition and IEC 62368-1 CB certification if required for the application. Validate the packing type against project specifications.

Current Regulation/Management Selection Notes

Select this component for applications requiring precise protection of 12 V rails without mechanical fuse replacement. Consider the integrated 40 mΩ FET for low voltage drop. Choose between latch and autoretry modes based on system recovery needs. Ensure the DFN10 or TSOT23-8L package fits the PCB layout. Verify compatibility with external components for slew rate adjustment if needed.

Current Regulation/Management Part Context

The STEF12SPUR belongs to the STEF12S series of electronic fuses by STMicroelectronics. This series is designed for industrial applications, offering robust protection for 12 V power lines. It replaces traditional mechanical fuses, providing resettable protection against short circuits and overloads. The series includes variants like STEF12E and STEF12SA, differing in package and protection mode.

Current Regulation/Management Replacement Considerations

STEF12SA is the autoretry version of the STEF12S series. STEF12E is a companion chip with similar functionality but may differ in specific electrical parameters or package availability. Verify pin compatibility and electrical characteristics before substitution.