ROHM BD6941FM Data Handbook
Summary
The BD6941FM is a specialized reversible motor driver IC designed for demanding automotive body control applications. It efficiently controls DC motors in four essential modes (Forward, Reverse, Standby, Brake) while featuring comprehensive built-in protections like overcurrent detection and high temperature shutdown. This manual provides absolute maximum ratings, detailed electrical characteristics, and technical guidelines necessary for integrating this robust power management IC into reliable onboard vehicle equipment. It is specifically intended for professional engineers developing advanced automotive electronics systems requiring precise motor control.
Page 1 Text Content
Power Management IC Series for Automotive Body Control
Motor Driver
No.09039EAT02
BD6941FM
●Description BD6941FM is the reversible motor driver for output 1.25A (1Motor), and can control a DC motor in four modes (Forward, Reverse, Standby, Brake) corresponding to two control logic inputs.
●Features 1) １ch DMOS H bridge output 2) Four output states ( Forward,Reverse,Standby,Brake ) by two control logic 3) Built-in surge-absorbing diodes 4) Low standby current 5) Output overcurrent protection with timer. 6) Over voltage detection switch off 7) TSD detects junction temperature and circuitry switches off the outputs at high temperature. 8) Built-in protection monitor pin (PO)
●Applications Onboard devices(Vehicle equipment etc)
●Absolute Maximum Ratings（Ta=25℃）
PARAMETER SYMBOL LIMIT UNIT SUPPLY VOLTAGE Vcc 50 V INPUT VOLTAGE VINP, VINN -0.3～20 V OUTPUT CURRENT IO 1.25 (＊1) A POWER DISSIPATION Pd 2.8 (＊2) W OPERATING TEMPERATURE Topr -40～105 ℃ STORAGE TEMPERATURE Tstg -55～150 ℃ JUNCTION TEMPERATURE Tjmax 150 ℃ *1 Not to exceed Pd and ASO.
*2 Mounted on a glass epoxy PCB (70mm×70mm×1.6mm).
To use at temperature above Ta=25℃ reduce 22.4m W/℃.
●Operating Range
PARAMETER SYMBOL LIMIT UNIT
SUPPLY VOLTAGE Vcc 8.0～16.0 V
www.rohm.com 2009.06 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BD6941FM Data Handbook
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 9 |
| File Size | 286.53 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
What motor operating modes are supported by this driver?
It supports four output states: Forward, Reverse, Standby, and Brake.
What is the required working voltage range for Vcc?
The operational supply voltage must be between 8.0 V and 16.0 V.
Why might the motor driver automatically shut down?
It features Thermal Shutdown (TSD) which switches off outputs at high junction temperatures, or Overcurrent Protection (OCP).
Can this unit be used in life-critical systems like medical instruments?
No. It is not designed for equipment that requires an extremely high level of reliability concerning human safety.