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BA6219BFP-Y

BA6920FP-Y

●Explanation of external components

① Capacitors that prevent upper and lower transistors from turning on simultaneously (Capacitors to connect to CD1 and CD2 pins in the

case of BA6219BFP-Y).

The rising of the base potential of the transistor at high-level output is delayed to prevent both transistors from turning on simultaneously.

the transistors do not turn on simultaneously.

② Capacitor for output oscillation prevention

The output pin may generate noise or oscillate, depending on the set mounting conditions, such as the power supply circuit, motor

③ Resistance for current limiting

A resistor used to prevent collector loss and limit the current of output shorting. Although the required resistance varies with the supply

voltage, a resistance of approximately 5Ω to 10Ω should be selected. When designing the circuit, pay utmost attention to voltage

reduction resulting from a rush current that flows when the driving of the motor starts.

④ Zener diode for output voltage setting

Zener diode for high output voltage VR (VREF) setting. The zener voltage can be set almost equal to high output voltage.

BA6219BFP-Y

BA6920FP-Y

Note: Pins 1, 3, 5, 9, 12, 14, 16 to 18, 21 to 18, 21 to 23, and 25 are NC pins.

PIN No.

Pin Name

Function

2

CD1

Capacitor connection pin for prevention of

upper and lower transistors to turn on

simultaneously

4

VR

High output voltage setting pin

6

IN1

Logic input pin

7

GND

GND

8

IN2

Logic input pin

10

VCC1

Power supply pin for small signal block

11

VCC2

Power supply pin for motor output

13

CD2

Capacitor connection pin for prevention of

upper and lower transistors to turn on

simultaneously

15

OUT2

Motor output pin

19

GND

GND

20

GND

GND

24

OUT1

Motor output pin

FIN

GND

Note: Be sure to connect the heat

dissipation fin to the GND pin.

Pin No

Pin name

Function

5

OUT2

Motor output pin

6

RNF

Connection pin for output current

detection on the GND pin of the

output block

8

GND

GND

9

OUT1

Motor output pin

16

VM

Motor power supply

17

Vcc

Power supply pin

18

FIN

Logic input pin

19

POWER

SAVE

Power saving input pin

20

RIN

Logic input pin

21

VREF

High output voltage setting pin

FIN

GND

Note: Be sure to connect the heat

dissipation fin to the GND pin.

Note: Pins 1 to 4, 7, 10 to 14, and 20 to 24 are NC pins.

VCC2

VCC1

OUT1

VR

OUT2

CD2

IN1

GND

IN2

CD1

MOTOR

TSD

-

+

1～100μF

0.1μF

0.1μF

①For preventing upper and

lower transistors from tur-

ning on simultaneously

0.01～1μF

LOGIC

④

②For output

oscillation

prevention

0.01～0.1μF

0.01μF

Fig.12

③Current limiting resistor

5～10Ω

ZD

POWER

POWER

SAVE

VREF

VCC1

VM

RIN

FIN

GND

RNF

LOGIC

TSD

Fig.13

-

+

5～10Ω

1～100μF

ZD

④

OUT1

OUT2

MOTOR

0.01μF

③Current limiting resistor

①For preventing upper and

lower transistors from

turning on simult-

aneously 0.01～1μF

②For output

oscillation

prevention

0.01～0.1μF