BA6219BFP-Y(2005) Просмотр технического описания (PDF) - ROHM Semiconductor
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BA6219BFP-Y Datasheet PDF : 9 Pages
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●Block diagram
BA6219BFP-Y
③Current limiting resistor
BA6920FP-Y
④
VR
ZD
- 1～100μF
+
5～10Ω
VCC1
VCC2
①For preventing upper and
lower transistors from tur-
ning on simultaneously
0.01～1μF
POWER
SAVE
0.1μF
CD1
VCC1
③Current limiting resistor
- 1～100μF
+
5～10Ω VM
POWER
IN1
LOGIC
IN2
TSD
OUT1 MOTOR
0.01μF
OUT2
CD2
0.1μF
RIN
LOGIC
FIN
GND
Fig.12
①For preventing upper and
lower transistors from
turning on simult-
aneously 0.01～1μF
②For output
oscillation
prevention
0.01～0.1μF
GND
Fig.13
TSD
VREF
RNF
④
ZD
OUT1 MOTOR
0.01μF
OUT2
②For output
oscillation
prevention
0.01～0.1μF
●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.
Set the capacitance between 0.01μF and 1μF and ensure that a penetration current does not flow during output mode changes, since
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
characteristics, and PCB pattern artwork. Connect a capacitor with a capacitance value of 0.01μF to 0.1μF to prevent noise oscillation.
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
PIN No.
2
4
6
7
8
10
11
13
15
19
20
24
FIN
Pin Name
CD1
VR
IN1
GND
IN2
VCC1
VCC2
CD2
OUT2
GND
GND
OUT1
GND
Function
Capacitor connection pin for prevention of
upper and lower transistors to turn on
simultaneously
High output voltage setting pin
Logic input pin
GND
Logic input pin
Power supply pin for small signal block
Power supply pin for motor output
Capacitor connection pin for prevention of
upper and lower transistors to turn on
simultaneously
Motor output pin
GND
GND
Motor output pin
Note: Be sure to connect the heat
dissipation fin to the GND pin.
Note: Pins 1, 3, 5, 9, 12, 14, 16 to 18, 21 to 18, 21 to 23, and 25 are NC pins.
BA6920FP-Y
Pin No
Pin name
Function
5
OUT2 Motor output pin
Connection pin for output current
6
RNF
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
POWER
19
Power saving input pin
SAVE
20
RIN
Logic input pin
21
VREF High output voltage setting pin
Note: Be sure to connect the heat
FIN
GND
dissipation fin to the GND pin.
Note: Pins 1 to 4, 7, 10 to 14, and 20 to 24 are NC pins.
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