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PDF BD7931F Data sheet ( Hoja de datos )

Número de pieza BD7931F
Descripción 0.5 Amp or Less Reversible Motor Drivers
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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Datasheet
0.5 Amp or Less
Reversible Motor Drivers (Single Motor)
BH6578FVM BD7931F
General Description
The BH6578FVM and BD7931F are reversible motor
drivers with a wide output dynamic range, with power
MOS used for the output transistor. The motor drivers
can be set to four output modes 1) forward (normal)
rotation, 2) reverse rotation, 3) stop (idling or OFF)
and 4) brake using 2 logic inputs.
Features
Wide dynamic range loading driver with MOS
output, RON = 1.0Ω (Top + Bottom)
With loading driver voltage setting terminal
Built-in Thermal Shutdown Circuit (TSD)
Key Specifications
Supply Voltage Range:
BH6578FVM
BD7931F
Standby Current:
BH6578FVM
BD7931F
ON-Resistance(Top + Bottom):
Operating Temperature Range:
BH6578FVM
BD7931F
4.5V to 5.5V
4.5V to 14V
0.4mA (Typ)
0µA (Typ)
1.0Ω (Typ)
-35°C to +85°C
-40°C to +85°C
Packages
W(Typ) x D(Typ) x H(Max)
Applications
Tray loading of CD/DVD,
applications using DC motors
MSOP8 (BH6578FVM)
2.90mm x 4.00mm x 0.90mm
SOP8 (BD7931F)
5.00mm x 6.20mm x 1.71mm
Typical Application Circuit, Block Diagram, Pin Configuration and Pin Descriptions
BH6578FVM, BD7931F (in common)
TOP VIEW
FWD IN REV IN LDCONT PREGND
8765
FR
Control
Logic LDCONT
+-
PRE
GND
TSD
POW CMOS
H-Bridge
POW
GND
123 4
M
Pin No.
1
2
3
4
5
6
7
8
Pin Name
VCC
OUT+
OUT-
GND
GND_S
LDCONT
INREV
INFWD
Function
Supply voltage
FWD output
REV output
Power ground
Signal ground
Loading driver voltage setting pin
REV input
FWD input
0.1μF
Bypass
VCC capacitor POWGND
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/13
TSZ02201-0H5H0BK01500-1-2
04.Nov.2015 Rev.001

1 page




BD7931F pdf
BH6578FVM BD7931F
Typical Performance Curves continued
0.0
-0.1
-0.2
-0.3
-35
25
85
-0.4
0
100 200 300 400 500
Load Current [mA]
Figure 5. Output Loss Voltage H vs Load Current
(BH6578FVM)
VCC=5V, LDCONT=OPEN
REV Mode
REV mode
0.4
85
25
-40
0.3
0.2
0.1
0.0
0
100 200 300 400 500
Load Current [mA]
Figure 7. Output Loss Voltage L vs Load Current
(BD7931F)
VCC=8V, LDCONT=OPEN
FWD Mode
0
85
25
-35
-1
-2
-3
-4
-5
01 23 45
LDCONT [V]
Figure 6. Output Voltage vs Input Voltage
(Voltage Gain (BH6578FVM))
VCC=5V, LDCONT=SWEEP
RL=8Ω +47µH
0.4
85
25
-40
0.3
0.2
0.1
0.0
0
100 200 300 400 500
Load Current [mA]
Figure 8. Output Loss Voltage L vs Load Current
(BD7931F)
VCC=8V, LDCONT=OPEN
REV Mode
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/13
TSZ02201-0H5H0BK01500-1-2
04.Nov.2015 Rev.001

5 Page





BD7931F arduino
BH6578FVM BD7931F
Physical Dimension, Tape and Reel Information
Package Name
MSOP8
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
11/13
TSZ02201-0H5H0BK01500-1-2
04.Nov.2015 Rev.001

11 Page







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