System Regulator for microcontroller for automotive - BD39012EFV-C

BD39012EFV-C is a power management IC with 1ch DC/DC convertor, 1 ch LDO, reset and watch dog timer. It can supply the power supply to module from battery directly. LDO has reset built-in and always watches that it supplies stable power supply to module. In addition, window watch dog timer is provided to detect the abnormality of the microcomputer. BD39012EFV-C enables a superior heat dissipation and a compact PCB design by HTSSOP-B24 package.

Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD39012EFV-CE2 Active HTSSOP-B24 2000 2000 Taping Yes
Grade Automotive
ch 2
Vin1(Min.)[V] 4.0
Vin1(Max.)[V] 45.0
Output Voltage1 (Min.)[V] 0.784
Output Voltage1 (Max.)[V] 0.816
Output Current Capacity 1 [V] 1.0
Output Voltage2 (Min.)[V] 4.9
Output Voltage2 (Max.)[V] 5.1
Output Current Capacity 2 [V] 0.4
SW frequency(Max.)[MHz] 0.6
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 125
    • Synchronous rectifier step-down DC / DC converter with built-in FET (Adjustable output)
    • Secondary LDO with built-in 5 V output FET
    • Monitoring function: Output over voltage / under voltage detection (PG output), Reset function (LDO) Window Watchdog Timer
    • Built-in protection function: Input under voltage protection (UVLO), Thermal shut down (TSD), Output over current protection (OCP)
    • Independent enable control
    • HTSSOP-B24 package
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Technical Data
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.