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BD6975FV Datasheet, PDF (1/17 Pages) Rohm – Multifunction Single-phase Full-wave | |||
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Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6975FV
âGeneral description
BD6975FV is a 1chip driver that composes H-bridge of
power DMOS FET. Moreover, it corresponds to the large
current motor, compared with old drivers, because the
regenerative method of motor current and the driving
block are optimized.
âPackage
SSOP-B14
W (Typ.) x D (Typ.) x H (Max.)
5.00mm x 6.40mm x 1.35mm
âFeatures
 SSOP small package
 Driver including power DMOS FET
 Speed controllable by DC / direct PWM input
 Hi-Eff switching
 Quick start
 Current limit
 Lock protection and automatic restart
 Rotation speed pulse signal (FG) output
SSOP-B14
âApplication
 Fan motors for general consumer equipment of desktop PC, and Projector, etc.
âAbsolute maximum ratings
Parameter
Symbol
Limit
Unit
Supply voltage
Power dissipation
Vcc
20
V
Pd
874.7 *1
mW
Operating temperature range
Topr
â40 to +100
°C
Storage temperature range
Tstg
â55 to +150
°C
Output voltage
Output current
Vo
20
V
Io
1.2 *2
A
Rotation speed pulse signal (FG) output voltage
Vfg
20
V
Rotation speed pulse signal (FG) output current
Ifg
10
mA
Reference voltage (REF) output current
Hall bias (HB) output current 1
Hall bias (HB) output current 2
Iref
Ihb1
Ihb2
5
mA
12 *3
mA
5 *4
mA
Input voltage (H+, Hâ, TH, MIN, CS, LZST)
Vin
7
V
Junction temperature
Tj
150
°C
*1 Reduce by 7.0mW/°C over Ta=25°C. (On 70.0mmÃ70.0mmÃ1.6mm glass epoxy board)
*2 This value is not to exceed Pd.
*3 The condition of Ta=0°C or more and Vcc=9V or more
*4 The condition of less than Ta=0°C and less than Vcc=9V
âRecommended operating conditions
Parameter
Operating supply voltage range
Operating input voltage range 1 (H+, Hâ)
(more than Vcc=9V)
Operating input voltage range 1 (H+, Hâ)
(less than Vcc=9V)
Operating input voltage range 2
(TH, MIN, CS, LZST)
Symbol
Vcc
Vin1
Vin2
Limit
Unit
3.5 to 17.0
V
0 to 7
V
0 to Vccâ2
V
0 to Vref
V
âProduct structureï¼Silicon monolithic integrated circuit âThis product is not designed protection against radioactive rays
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0H1H0B100220-1-2
28.JUL.2012 Rev.002
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