Built-in Output Diagnosis 1ch High Side Switch

BV1HJ045EFJ-C is a 1ch high side switch for automotive application. It has a built-in overcurrent limit function, thermal shutdown protection function, open load detection function, low power output-OFF function and short-to-VCC detection function. It is equipped with diagnostic output function for abnormality detection. The overcurrent limit is 5.0A to 12.0A. BV1HL045EFJ-C with overcurrent limit of 2.5A to 5.5A is also available.

Product Detail

Part Number | BV1HJ045EFJ-CE2
Status | Recommended
Package | HTSOP-J8
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS | Yes




Common Standard

AEC-Q100 (Automotive Grade)

Channel Number [ch]


Output Current[A]


ON Resistance [mΩ]


Over Current Detect [A]

5 to 12

Thermal Shut Down


Output Turn on Time [ms]


Flag Output Delay at Over Current [ms]


Control Input Logic

Active High

Junction Temperature Tj (Min.)[°C]


Junction Temperature Tj (Max.)[°C]


Package Size [mm]

4.9x6 (t=1)


  • Built-in Dual TSD
    (Two type of built-in temperature protection : Junction temperature, and ΔTj protection that detects sudden temperature rise of the Power-MOS)
  • AEC-Q100 Qualified (Grade 1)
  • Built-in Overcurrent Protection Function (OCP)
  • Built-in Thermal Shutdown Protection Function (TSD)
  • Built-in Open Load Detection Function
  • Built-in Short-to-VBB Detection Function
  • Built-in Low Voltage Output OFF Function (UVLO)
  • Built-in Reverse Battery Connection Protection
  • Built-in Diagnostic Output
  • Low On-Resistance Single Nch MOSFET Switch
  • Monolithic power management IC with control unit (CMOS) and power MOSFET mounted on a single chip

Design Resources


Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Basics of Thermal Resistance and Heat Dissipation
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Resistance



  • HTSOP-J8 Footprint / Symbol
  • HTSOP-J8 3D STEP Data

Packaging & Quality

Package Information

  • Package Information

Manufacturing Data

  • Factory Information