BA6247 Rohm Semiconductor, BA6247 Datasheet - Page 4

IC DRIVER REVERSE MOTOR HSIP10

BA6247

Manufacturer Part Number
BA6247
Description
IC DRIVER REVERSE MOTOR HSIP10
Manufacturer
Rohm Semiconductor
Datasheet

Specifications of BA6247

Applications
DC Motor Driver
Number Of Outputs
2
Current - Output
1A
Voltage - Supply
8 V ~ 18 V
Operating Temperature
-25°C ~ 75°C
Mounting Type
Through Hole
Package / Case
10-SIP + Tab
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-

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FOperation notes
(1)
(1) The input threshold voltage is positively correlated
with temperature as expressed by :
(2) The input pins of the BA6246N are pulled up through
a resistance of about 15k
LOW level input, the interface to these pins should have
a current-sink capability of at least 700 A
(5V / 15k
(3) The maximum input voltage is 6V. Make sure that the
input will not exceed this value. Also when the voltage
V
input pins.
(2)
When reversing the rotational direction of a motor, make
sure to go through the brake or open mode in-between
the opposite directions.
The duration of brake mode should be more than the
braking time, which is defined by the time required for the
potential of the LOW level output pin to become less than
the ground potential by the electromotive force gener-
ated when the mode is switched from rotation to brake.
The duration of open mode should be 1 ms or more.
(3)
that is not being driven could be momentarily driven dur-
ing mode switching. Check for this problem when design-
ing your application.
(4)
voltage rises at V
power, and voltage falls at V
off the power.
(5)
When the thermal shutdown circuit is activated, the out-
puts are left OPEN. The circuit is activated when the IC
junction temperature rises above 170_C. The tempera-
ture difference between the activation and deactivation
settings is about 30_C.
(6)
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
Motor driver ICs
CC
is not applied to the IC, do not apply voltages to the
Input conditions
Changes in motor direction
Due to the effects of capacitors C
It is recommendable to arrange your design so that
Thermal shutdown circuit
The quality of these products have been carefully
V
V
T
T
IH
IL
2).
)1.6mV / _C (Typ.)
)2.8mV / _C
CC1
prior to V
(see Fig. 1). To secure the
CC1
CC2
after V
when turning on the
CC2
2X
C
when turning
5
, the motor
BA6246N / BA6247 / BA6247N / BA6247FP-Y
be specified, so if the IC is to be used in applications
where parameters may exceed the absolute maximum
retings, then be sure to incorporate fuses, or other physi-
cal safety measures.
(7)
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.
(8)
Large currents 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 pa-
rameters for external components, such as the capacitor
between the power supply and ground, may cause this
large output current to flow back to the input pins, result-
ing in output oscillation or other malfunctions. To prevent
this, make sure that the PC board layout and external cir-
cuit constants cause no problems with the characteris-
tics of these ICs.
(9)
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.
(10) Power consumption
The power consumption by the IC varies widely with the
power supply voltage and the putput 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.
(11) ASO
Make sure that the output current and supply voltage do
not exceed the ASO values.
(12) 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 countermeasure.
(13) 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.
Back-rush voltage
Large current line
Power dissipation
501

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