BD63800MUF-C (Under Development)
40V Max, Low-Consumption Bipolar, PWM Current Drive Stepping Motor Driver for Automotive

BD63800MUF-C is a bipolar low-consumption driver that is driven by PWM current. Rated power supply voltage of the device is 40 V, and rated output current is 1.35 A. BD63800MUF-C has two input interface as driving mode: CLK-IN and SPI-IN, and six excitation modes: Full step, 1/2, 1/4, 1/8, 1/16 and 1/32 step. Mix Decay Mode: the seamless adjustment function of slow/fast decay ratio, and Auto Decay Mode: Automatic switching function of slow/fast decay, can realize the optimized control status for all kinds of motor. In addition, BD63800MUF-C operates with single power supply which can simplify the set design.

Data Sheet Buy Sample
Data Sheet Buy Sample

Product Detail

Part Number | BD63800MUF-CE2
Package | VQFN32FBV050
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS | Yes




Common Standard

AEC-Q100 (Automotive Grade)

Vcc (Max.)[V]


Power Supply Voltage (Max.) [V]


Power Supply Voltage (Min.) [V]


Iout (Max.)[A]


Iout Peak (Max.)[A]


Output On Resistance (Typ.)[Ω]



CLK-IN/Serial Interface(SPI)


to 1 / 32

MIX DECAY Function


Single power supply input


Automotive class


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Package Size [mm]

5x5 (t=1)


  • AEC-Q100 Qualified(Grade 1)
  • Low ON Resistance DMOS Output
  • CLK-IN Drive Mode
  • PWM Constant Current Control(Separately Excited)
  • Built-in Spike Noise Cancel Function
    (No external noise filter is required)
  • Supported Modes: Full step, 1/2, 1/4, 1/8, 1/16 and 1/32 step
  • Excitation Mode Switching Timing Free
  • Current Decay Mode Switch Function
    Mix Decay: Linear Adjustment of Slow Decay / Fast Decay Ratio
    Auto Decay: Automatic Switch of Slow Decay / Fast Decay
  • Selectable Rotation Direction: Clockwise/Counter Clockwise
  • Power Save Function
  • Built-in Pull-down Resistors for Logic Input
  • Power-on Reset Function
  • Malfunction prevention function w/o power supply
    (Ghost Supply Prevention Function)
  • Thermal Shutdown Function(TSD)
  • Thermal Warning Function(TW)
  • Over Current Protection Function(OCP)
  • Over Voltage Lock-out Function(OVLO)
  • Under Voltage Lock-out Function(UVLO)
  • Under Voltage Motor Hold Function
  • Open Detection Function
  • Stall Detection Function
  • Adjacent Pin Short Protection


    • Evaluation Board
    • BD63800MUF-EVK-001
    • BD63800MUF-EVK-001 is an evaluation board for the Automotive Stepping Motor Driver IC. Also, SPI master board, USB cable and a GUI can be provided by ROHM for easy SPI register configuration.

  • User's Guide Purchase Inquiry

Design Resources



User's Guide

  • Evaluation Board User's Guide for BD63800MUF-EVK-001

Application Note

  • 40V Max Stepping Motor Driver for Automotive BD63800MUF-C Application Note

Technical Articles

Schematic Design & Verification

  • Method for Monitoring Switching Waveform
  • 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
  • Notes for Temperature Measurement Using Thermocouples
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple



  • VQFN32FBV050 Footprint / Symbol
  • VQFN32FBV050 3D STEP Data

Packaging & Quality

Package Information

  • Package Information

Manufacturing Data

  • Factory Information