000750

Mega Componentes
Mega ComponentesMega Componentes
411
Motor driver ICs
Reversible motor driver
BA6229
The BA6229 is a monolithic IC used for driving reversible motors. The ICs contain a logic section by which brake and
open modes can be set and an output power transistor by which forward and reverse operations are controlled.
FFeatures
1) Built-in power transistor for motor driving (1.2A
Max.).
2) Low quiescent current. (VCC=12V, IQ=1mA)
3) Wide range of operating supply voltage (8 X 23V).
4) Interfaces with CMOS devices.
5) Four output modes: forward, reverse, stop (open),
and brake.
6) Built-in diode absorbs surge currents.
FBlock diagram
FAbsolute maximum ratings (Ta = 25_C)
412
Motor driver ICs BA6229
FMeasurement circuit FApplication example
FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC1 = 12V)
413
Motor driver ICs BA6229
FOperation notes
(1) The quality of these products have been carefully
checked; however, use of the products with applied volt-
ages, operating temperatures, or other parameters that
exceed the absolute maximum rating given may result in
the damage of the IC and the product it is used in. If the
IC is damaged, the short mode and open modes cannot
be specified, so if the IC is to be used in applications
where parameters may exceed the absolute maximum
ratings, then be sure to incorporate fuses, or other physi-
cal safety measures.
(2) Input pins
Voltage should never be applied to the input pins when
the VCC voltage is not applied to the IC. Similarly, when
VCC is applied, the voltage on each input pin should be
less than VCC and within the guaranteed range for the
electrical characteristics.
(3) Back-rush voltage
Depending on the ambient conditions, environment, or
motor characteristics, the back-rush voltage may fluctu-
ate. Be sure to confirm that the back-rush voltage will not
adversely affect the operation of the IC.
(4) Large current line
Largecurrents are carried by the motor power supply and
motor ground for these ICs.
Therefore, the layout of the pattern of the PC board and
the constants of certain parameters for external compo-
nents, such as the capacitor between the power supply
and ground, may cause this large output current to flow
back to the input pins, resulting in output oscillation or
other malfunctions. To prevent this, make sure that the
PC board layout and external circuit constants cause no
problems with the characteristics of these ICs.
(5) Power dissipation
The power dissipation will fluctuate depending on the
mounting conditions of the IC and the ambient environ-
ment. Make sure to carefully check the thermal design of
the application where these ICs will be used.
(6) Power consumption
The power consumption by the IC varies widely with the
power supply voltage and the output current. Give full
consideration to the power dissipation rating and the
thermal resistance data and transient thermal resistance
data, to provide a thermal design so that none of the rat-
ings for the IC are exceeded.
(7) ASO
Make sure that the output current and supply voltage do
not exceed the ASO values.
(8) Precautions for input mode switching
To ensure reliability, it is recommended that the mode
switching for the motor pass once through the open
mode.
(9) In-rush current
There are no circuits built into these ICs that prevent in-
rush currents. Therefore, it is recommended to place a
current limiting resistor or other physical countermea-
sure.
(10) Factors regarding the thermal, power supply, and
motor conditions
If the potential of the output pin sways greatly and goes
below the potential of ground, the operation of the IC may
malfunction or be adversely affected. In such a case,
place a diode between the output and ground, or other
measure, to prevent this.
FExternal dimensions (Units: mm)

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000750

  • 1. 411 Motor driver ICs Reversible motor driver BA6229 The BA6229 is a monolithic IC used for driving reversible motors. The ICs contain a logic section by which brake and open modes can be set and an output power transistor by which forward and reverse operations are controlled. FFeatures 1) Built-in power transistor for motor driving (1.2A Max.). 2) Low quiescent current. (VCC=12V, IQ=1mA) 3) Wide range of operating supply voltage (8 X 23V). 4) Interfaces with CMOS devices. 5) Four output modes: forward, reverse, stop (open), and brake. 6) Built-in diode absorbs surge currents. FBlock diagram FAbsolute maximum ratings (Ta = 25_C)
  • 2. 412 Motor driver ICs BA6229 FMeasurement circuit FApplication example FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC1 = 12V)
  • 3. 413 Motor driver ICs BA6229 FOperation notes (1) The quality of these products have been carefully checked; however, use of the products with applied volt- ages, operating temperatures, or other parameters that exceed the absolute maximum rating given may result in the damage of the IC and the product it is used in. If the IC is damaged, the short mode and open modes cannot be specified, so if the IC is to be used in applications where parameters may exceed the absolute maximum ratings, then be sure to incorporate fuses, or other physi- cal safety measures. (2) Input pins Voltage should never be applied to the input pins when the VCC voltage is not applied to the IC. Similarly, when VCC is applied, the voltage on each input pin should be less than VCC and within the guaranteed range for the electrical characteristics. (3) Back-rush voltage Depending on the ambient conditions, environment, or motor characteristics, the back-rush voltage may fluctu- ate. Be sure to confirm that the back-rush voltage will not adversely affect the operation of the IC. (4) Large current line Largecurrents are carried by the motor power supply and motor ground for these ICs. Therefore, the layout of the pattern of the PC board and the constants of certain parameters for external compo- nents, such as the capacitor between the power supply and ground, may cause this large output current to flow back to the input pins, resulting in output oscillation or other malfunctions. To prevent this, make sure that the PC board layout and external circuit constants cause no problems with the characteristics of these ICs. (5) Power dissipation The power dissipation will fluctuate depending on the mounting conditions of the IC and the ambient environ- ment. Make sure to carefully check the thermal design of the application where these ICs will be used. (6) Power consumption The power consumption by the IC varies widely with the power supply voltage and the output current. Give full consideration to the power dissipation rating and the thermal resistance data and transient thermal resistance data, to provide a thermal design so that none of the rat- ings for the IC are exceeded. (7) ASO Make sure that the output current and supply voltage do not exceed the ASO values. (8) Precautions for input mode switching To ensure reliability, it is recommended that the mode switching for the motor pass once through the open mode. (9) In-rush current There are no circuits built into these ICs that prevent in- rush currents. Therefore, it is recommended to place a current limiting resistor or other physical countermea- sure. (10) Factors regarding the thermal, power supply, and motor conditions If the potential of the output pin sways greatly and goes below the potential of ground, the operation of the IC may malfunction or be adversely affected. In such a case, place a diode between the output and ground, or other measure, to prevent this. FExternal dimensions (Units: mm)