BA6222 Rohm Semiconductor, BA6222 Datasheet - Page 6

• Manufacturer Part Number: BA6222
• Description: IC MOTOR DRVR REVERSIBLE HSIP10
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of BA6222

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

www.rohm.com
BA6219BFP-Y,BA6222
© 2011 ROHM Co., Ltd. All rights reserved.
2)
3)
Output high voltage setting
This function optionally sets output voltage by the output high voltage setting pin and controls the motor rotating speed.
However, when the output high voltage is set to a low level, consumption at IC increases. Carry out thermal design with
sufficient margin incorporated with the power dissipation (Pd) under the actual application condition taken into account.
a)
b)
c)
Switching of rotating direction (FWD/REV)
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:
via BRAKE: Longer than braking time*.
BA6219BFP-Y
The circuit diagram associated with the output high voltage setting
VR pin is as per shown on the right. The maximum output voltage
V
V
In addition, the relation of VR voltage to output voltage at V
expressed by:
V
V
ΔV
BA6222
As the relationship between the output high voltage setting pin VR
voltage and output high voltage V
V
In such event, V
output current and chip temperature.
The VR voltage region can be classified into three categories in accord
with the output state:
Using this function with the VR pin connected to a load which has output impedance of several hundred ohms may
result in oscillation. In such event, connect a capacitor of 3300pF or higher to about 0.1μF across VR and GND
and make sure that the motor is free of oscillation.
Power supply voltage range of VR voltage
When output voltage control pin (VR) is used:
VR < VCC1 - ( V
VR
VR < VCC2 - ( V
VR
The output voltage control function does not operate in the region
outside this range. In addition, when the VR pin is not used, use
by shorting VR to VCC1.
via OPEN: The time longer than 1 ms is recommended.
OMAX
OMAX
OH
OH
OH
(A) Output high voltage 0V offset region
(B) Fourfold gain region
(C) Output voltage saturated region
F
≈ VCC1 - 2.5V
≈ VCC2 - 1V
= VR + ( V
= VR + ΔV
≈ 4 x VR + V
depends on the output current but is nearly V
is expressed by:
= VCC1 - ( V
(* the time required for the output L terminal to achieve potential below GND when brake is activated.)
F(Q5)
F
OFS
≈ VR
SAT(Q1)
SAT(Q3)
OFS
SAT(Q1)
+ V
means the offset voltage, which varies in accord with
F(Q6)
+ V
- V
+ V
F(Q3)
F(Q5)
+ V
F(Q2)
- V
F(Q7)
+ V
F(Q2)
OH
+ V
F(Q6)
) - ( V
is expressed by:
F(Q3)
) - ( V
+ V
F(Q2)
+ V
F(Q7)
F(Q5)
F(Q4)
+ V
)
6/10
+ V
F(Q3)
OH
)
F(Q6)
=VR. (Reference values; V
+ V
+ V
F(Q4)
OMAX
F(Q7)
)
or lower is
)
VOH
VOH
SAT
VCC1 - 3V
(A)
Q5
Q6
Q7
Control range
≈ 0.25V, V
VR
Q1
F
BA6222
Q2
- V
(B)
SAT
Fig. 17
Fig. 19
Q3
Fig. 18
F
Technical Note
≈ 0.75V)
2011.05 - Rev.B
Q4
Saturation range
BA6219BFP-Y
(C)
VCC1
VCC2
OUT
VR
VR