ROHM BD6974FV Data Manual
Summary
This specialized integrated circuit is a high-performance, single-phase full-wave motor driver optimized for fan motor applications. Featuring DC/PWM speed control and soft switching drive capabilities, it acts as a reliable pre-driver solution. The manual provides detailed electrical characteristics, operational guidelines, absolute maximum ratings, and crucial setup precautions to ensure safe integration. It is essential reading for engineers and system designers building precise, efficient control electronics for fan motor systems.
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STRUCTURE Silicon Monolithic Integrated Circuit
PRODUCT SERIES Single-Phase Full-Wave Motor Driver for Fan Motor
TYPE ＢＤ６９７４ＦＶ
FEATURES Pre-driver compatible for external Tr Speed controllable by DC/PWM input PWM soft switching drive
〇ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Limit Unit
Supply voltage Vcc 20 V Power dissipation Pd 874.7＊ m W Operating temperature Topr -40 to +100 °C Storage temperature Tstg -55 to +150 °C High side output voltage VOH 36 V Low side output voltage VOL 15 V Low side output current IOL 10 m A AL output current IAL 10 m A AL output voltage VAL 20 V REF current ability IREF 12 m A HB current ability IHB 12 m A Input voltage(H+, H-, TH, MIN, CS, SS) VIN 7 V Junction temperature Tjmax 150 °C ＊Reduce by 7.0m W/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
〇OPERATING CONDITIONS
Parameter Symbol Limit Unit
Operating supply voltage range Vcc 4.3 to 17.0 V
0 to Vcc-2.0 V less than Vcc=9.0V
Hall input voltage range VH
0 to 7.0 V more than Vcc=9.0V
TH input voltage range VTH 0 to REF V MIN input voltage range VMIN 0 to REF V ＊This product is not designed for production against radioactive rays. ＊This document may be strategic data subject to COCOM regulations.
REV. B
Page Summary Contents For ROHM BD6974FV Data Manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 5 |
| File Size | 127.21 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the maximum safe supply voltage?
20V
How is motor speed controlled?
Using DC or PWM input.
What is the typical REF voltage?
5.0V
How can I protect against reverse polarity connection?
Add an external direction diode.