BA6285AFP-YE2 Rohm Semiconductor, BA6285AFP-YE2 Datasheet - Page 11

• Manufacturer Part Number: BA6285AFP-YE2
• Description: IC DRVR MOTOR REV 30V 1A HSOP25
• Manufacturer: Rohm Semiconductor
• Type: Reversible Motor Driverr

Specifications of BA6285AFP-YE2

• Applications: DC Motor Driver
• Number Of Outputs: 1
• Current - Output: 1A
• Voltage - Supply: 4.5 V ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 25-HSOP
• Product: Fan / Motor Controllers / Drivers
• Operating Supply Voltage: 4.5 V to 24 V
• Supply Current: 63 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: BA6285AFP-YE2TR

 External application components
 Functional descriptions
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BA6956AN, BA6287F, BA6285FS, BA6285AFP-Y, BA6920FP-Y
c
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2009 ROHM Co., Ltd. All rights reserved.
1) Resistor for the current limitation, R1
2) Resistors and zener diode for the output high voltage setting, R2, R3 and ZD
3) Stabilization capacitor for the power supply line, C1
4) Phase compensating capacitor, C2, C3
1) Operation modes
This is a current limiting resistor for collector loss reduction and at the time of short-circuited output. It depends on the
power supply voltage used, etc., but choose resistance of about 5 to 10Ω. In addition, set resistance with utmost care
to voltage drop caused by inrush current that flows when the motor is started.
These are the resistors and zener diode used when output high voltage is set. As for the voltage, only ( V
lower than the VREF pin voltage for BA6287F, BA6285FS and BA6285AFP-Y. (Reference values; V
0.75V) Zener diode ZD is recommended to be used instead of resistor R3 when the power supply voltage is unstable
for BA6956AN and BA6920FP-Y.
Please connect the capacitor of 1μF to 100μF for the stabilization of the power supply line, and confirm the motor
operation.
Noise is generated in output pins or oscillation results in accord with the set mounting state such as power supply
circuit, motor characteristics, PCB pattern artwork, etc. As noise oscillation measures, connect 0.01μF to 0.1μF
capacitors.
a) Stand-by mode
b) Forward mode
c) Reverse mode
d) Brake mode
Note) Switching of rotating direction (FWD/REV)
In stand-by mode, all output power transistors are turned off, and the motor output goes to high impedance.
This operating mode is defined as the forward rotation of the motor when the OUT1 pin is high and OUT2 pin is low.
When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT1 to OUT2.
This operating mode is defined as the reverse rotation of the motor when the OUT1 pin is low and OUT2 pin is high.
When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT2 to OUT1.
This operating mode is used to quickly stop the motor (short circuit brake).
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:
* OPEN is the off state of all output transistors. Please note that this is the state of the connected diodes, which differs from that of the mechanical relay.
** Output OUT1 and OUT2 become OPEN regardless of the input logic of FIN and RIN when switching to the power save mode with the POWERSAVE pin.
IN1
via BRAKE: Longer than braking time*.
H
H
L
L
via OPEN: The time longer than 1 ms is recommended.
IN2
H
H
L
L
OPEN*
OUT1
H
L
L
OPEN*
OUT2
H
L
L
(* the time required for the output L terminal to achieve potential below GND when brake is activated.)
Table 6 Logic table
11/15
Reverse (OUT1 < OUT2)
Forward (OUT1 > OUT2)
Brake (stop)
Stop (idling)
Operation
Technical Note
2009.04 - Rev.A
SAT
≈ 0.25V, V
SAT
+ V
F
F
≈
)