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PDF BA6872 Data sheet ( Hoja de datos )
| Número de pieza | BA6872 | |
| Descripción | 3-phase motor driver and reversible motor driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Motor driver ICs
3-phase motor driver and reversible
motor driver
BA6872AFM
The BA6872AFM has a 3-phase motor driver for VCR capstans, and a reversible motor driver for VCR loading. The cap-
stan motor driver uses the three-phase, pseudo-linear drive method, and has a built-in torque ripple cancellation circuit,
and an output transistor saturation prevention circuit. The loading motor driver has two logic inputs which are used to
set the four operation modes (forward, reverse, stopped (idle) and brake.
FApplications
VCR capstan motors, VCR loading motors
FFeatures
1) 3-phase, pseudo-linear drive system.
2) Torque ripple cancellation circuit.
3) Output transistor saturation prevention circuit.
4) Hall element power supply.
5) Two control logic inputs set the four operation modes:
forward, reverse, stopped (idle), and brake.
6) Output voltage setting is possible using the Vref pin.
7) Thermal shutdown (TSD) circuit.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
821
1 page  
Motor driver ICs
(7) Loading motor output (pins 17 to 21)
BA6872AFM
(8) Capstan motor output (pins 22 to 26)
825
5 Page 
Motor driver ICs
BA6872AFM
(12) This IC is not equipped with a circuit to limit in-rush
current. Therefore, connect a current limiting resistor to
limit the in-rush current.
(13) Depending on the thermal dissipation conditions,
power supply voltage, and type of motor, the potentials
on the output pins of this IC can swing to levels well below
GND, and cause faulty operation. In this case, take ap-
propriate countermeasures such as connecting a diode
between the outputs and GND.
FExternal dimensions (Units: mm)
(14) Great care has been paid to the quality of this com-
ponent. However, if the absolute maximum ratings for
temperature and applied voltage are exceeded, the IC
may be destroyed. Since it is not possible to predict
whether the IC will be in the short mode or open mode if
it is destroyed, be sure to use sufficient physical protec-
tive measures (fuses etc.) if there is a chance that the
maximum ratings of the IC will be exceeded.
831
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet BA6872.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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| BA6871BS | 3-phase motor driver | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
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