ROHM BD6974FV Technical data

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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＊ mW
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 mA
AL output current
AL output voltage
REF current ability
HB current ability

IAL 10 mA

VAL 20 V

IREF 12 mA

IHB 12 mA
Input voltage(H+, H-, TH, MIN, CS, SS) VIN 7 V
Junction temperature Tjmax 150 °C

＊Reduce by 7.0mW/°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

Hall input voltage range VH

0 to Vcc-2.0 V

0 to 7.0 V
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.

less than Vcc=9.0V
more than Vcc=9.0V

REV. B

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〇ELECTRICAL CHARACTERISTICS (Unless otherwise specified Ta=25°C, Vcc=12V)

Parameter

Symbol

Min. Typ. Max.

Limit

Unit Conditions

Circuit current Icc 3 5 8 mA
Hall input hysteresis VHYS ±5 ±10 ±15 mV
High side output current IH 9.0 12.0 16.5 mA VOH=12V
High side output leak current IHL - - 10 μA VOH=36V
Low side output high voltage VLH 9.3 9.5 - V IOL=-5mA
Low side output low voltage VLL - 0.5 0.7 V IOL=5mA
Lock detection ON time TON 0.2 0.3 0.45 s
Lock detection OFF time TOFF 4.0 6.0 9.0 s
AL output low voltage VALL - - 0.3 V IAL=5mA
AL output leak current IALL - - 10 μA VAL=17V
OSC low voltage VOSCL 0.8 1.0 1.2 V
OSC high voltage VOSCH 2.3 2.5 2.7 V
OSC charge current ICOSC -55 -40 -25 μA
OSC discharge current IDOSC 25 40 55 μA

VTH=VREF×0.26

Output ON duty 1 DUTY1 75 80 85 %

(H side pull up R=1kΩ,
COSC=470pF)
VTH=VREF×0.35

Output ON duty 2 DUTY2 45 50 55 %

(H side pull up R=1kΩ,
COSC=470pF)
VTH=VREF×0.44

Output ON duty 3 DUTY3 15 20 25 %

(H side pull up R=1kΩ,

COSC=470pF)
REF voltage VREF 4.8 5.0 5.2 V IREF=-2mA
Hall bias voltage VHB 1.10 1.26 1.50 V IHB=-2mA
Current limit voltage VCL 120 150 180 mV
SS charge current ISS 50 120 300 nA VSS=0V
TH bias current ITH - - 0.2 μA
MIN bias current IMIN - - 0.2 μA
CS bias current ICS - - 0.2 μA

REV. B