BA6238A Rohm Semiconductor, BA6238A Datasheet - Page 12

• Manufacturer Part Number: BA6238A
• Description: IC DRIVER REV MOTOR 2CH HSIP10
• Manufacturer: Rohm Semiconductor

Specifications of BA6238A

• Applications: DC Motor Driver
• Number Of Outputs: 2
• Current - Output: 1.6A
• 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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BA6246, BA6246N, BA6247FP-Y, BA6239A, BA6238A, BA6238AN
c
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2009 ROHM Co., Ltd. All rights reserved.
3) Control input conditions
4) Switching of rotating direction (FWD/REV)
c) BA6238A, BA6238AN
The input threshold voltage has a positive temperature coefficient and is expressed by:
The input pin is pulled up at about 15kΩ.
Set input voltage with care not to exceed the maximum input voltage (internal voltage regulator).
When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is
temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions as
follows:
The motor in no drive might be influenced momentarily because the all driver outputs low at the brake.
BA6246, BA6246N, BA6247FP-Y ··· 6V
BA6239A, BA6238A, BA6238AN ··· 5V
The circuit diagram associated with the output high voltage setting VR pin is as per shown on the right.
The output high and low voltages V
V
V
V
(Reference values; V
In addition, the relation of VREF voltage to output voltage is expressed by:
VR < VCC1 - V
VR < VCC2 - ( V
Therefore, when the VREF voltage condition is as follows, the output high voltage is restricted.
VR > VCC1 - V
VR > VCC2 - ( V
V
V
via BRAKE: Longer than braking time*.
ΔVIH
OH
OH
OL
OH
OH
ΔT
via OPEN: The time longer than 1 ms is recommended (BA6246, BA6246N only)
= V
= VR + ( V
≈ VR
= VCC1 - V
= VCC2 - V
SAT(Q7)
= +2.8mV / °C
+ V
(* the time required for the output L terminal to achieve potential below GND when brake is activated.)
F(Q5)
SAT(Q1)
SAT(Q1)
SAT(Q1)
SAT(Q2)
SAT(Q2)
SAT(Q2)
F(Q6)
+ V
SAT
- V
- V
- V
- V
F(Q4)
+ V
+ V
≈ 0.1V, V
F(Q4)
F(Q4)
F(Q2)
F(Q3)
F(Q3)
F(Q3)
) - ( V
- V
- V
- V
ΔVIL
) + (V
) + (V
ΔT
F(Q5)
F(Q5)
F(Q3)
F(Q2)
F
OH
≈ 0.7V)
F(Q2)
F(Q2)
+ V
and V
= +1.6mV / °C
F(Q3)
+ V
+ V
OL
F(Q3)
F(Q3)
)
are expressed by:
) - ( V
) - ( V
12/15
F(Q4)
F(Q4)
+ V
+ V
F(Q5)
F(Q5)
)
)
Fig.37 BA6238A, BA6238AN
VR
Q1
Q4
Q5
Technical Note
2009.04 - Rev.A
Q2
Q7
Q3
Q6
VCC1
VCC2
OUT
GND