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BA6219B/BA6219BFP-Y
Motor driver ICs
Reversible motor driver
BA6219B/6219BFP-Y
The BA6219B and BA6219BFP-Y are reversible-motor drivers suitable for brush motors. Two logic inputs allow four output modes: forward, reverse, idling, and braking. Two motor revolving speed can be set arbitrarily by controlling the voltage applied to the motor.
!Features 1) Large output current. (IO=2.2A Max.) 2) Built-in thermal shutdown circuit. 3) Built-in output voltage setting pins. 4) Small standby supply current.
!Applications VCRs and cassette tape recorders !Block diagram
CD1 3pin (2pin)
VCC2 8pin (11pin)
CD2 9pin (13pin)
7pin VCC1 (10pin)
2pin 10pin (24pin) (15pin) VR OUT1 OUT2
4pin (4pin)
IN1 5pin (6pin) THERMAL SHUTDOWN CIRCUIT
IN2 6pin (8pin)
1pin 19,20pin GND 7pin
(
)
CONTROL CIRCUIT Figures in parentheses for the BA6219BFP - Y
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BA6219B/BA6219BFP-Y
Motor driver ICs
!Absolute maximum ratings (Ta = 25°C)
Parameter Applied voltage Power dissipation
BA6219B BA6219BFP - Y
Symbol VCC Pd Topr Tstg
IO VIN
Limits
24 2200
1
Unit V mW °C °C
A V
1450 2 -20 to +75 -50 to +125 2.2
3
Operating temperature Storage temperature Output current Input voltage
-0.3 to VCC1
1 Reduced by 22mW for each increase in Ta of 1°C over 25°C. 2 When mounted on a 90+ 50+ 1.6 mm glass epoxy board. Reduced by 14.5 mW for each increase in Ta of 1°C over 25°C . 3 3500µs pulse with a duty ratio of 1% .
!Recommended operating conditions (Ta = 25°C)
Parameter Operating power supply voltage Symbol VCC1 VCC2 Min. 8 Typ. - Max. 18 Unit V
!Electrical characteristics (unless otherwise noted, Ta=25°C and VCC=12V)
Parameter Symbol ICC1 ICC2 ICC3 VTH VH VL Min. - - - 1.0 6.5 - Typ. 1.2 16 25 2.0 - - Max. 2.5 35 60 3.0 - 1.2 Unit mA mA mA V V V Conditions
Current dissipation 1 Current dissipation 2 Current dissipation 3 Input threshold voltage Output high level voltage Output low level voltage
Both input pins LOW One input HIGH, the other LOW Both input pins HIGH Low level is 1V or less, HIGH leves is 3V or more RL=60,ZD=6.8V RL=60
!Electrical characteristics curves
10
ICC2 : One input pin HIGH,
the other LOW
VCC=12V
ICC3
SUPPLY CURRENT : ICC(mA)
SUPPLY CURRENT:ICC (mA)
8
OUTPUT VOLTAGE : VO (V)
40
ICC3 : Input pins HIGH
13
6
30 ICC2 20
11 VH 9
4 ICC1
input pin LOW
4 VL 2
2
10
0 0
4
8
12
16
20
0 0
4
8
12
16
20
0 0
0.4
0.8
1.2
1.6
2.0
2.4
SUPPLY VOLTAGE : VCC(V)
SUPPLY VOLTAGE : VCC (V)
OUTPUT CURRENT : IO (A)
Fig.1 Current dissipations 1 vs. power supply voltage
Fig.2 Current dissipation 2,3 vs. power supply voltage
Fig.3 Output voltage vs. output current
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BA6219B/BA6219BFP-Y
Motor driver ICs
20 VCC=18V 16
OUTPUT "H" VOLTAGE : VOH
(V)
12
VCC=12V 8 VCC=8V 4
0 0
4
8
12
16
20
4pin VOLTAGE : V4 (V)
Fig.4 Output voltage vs. 4 pin voltage
!Measurement circuits
RL 60
BA6219B
1 2 3 4 5 6 7 8 9 10
BA6219BFP-Y
A A RC 10
6.8V 1V A A RC 10 6.8V 1V 3V VCC 12V A To 4pin To 11pin To 24pin To 15pin RL60 A 3V
VCC 12V
To 4pin To 8pin To 2pin To 10pin
V V
Fig.5
Fig.6
!Input / Output circuit
Input IN1 L H L H IN2 L L H H OUT1 OPEN H L L Output OUT2 OPEN L H L Idling Forward Reverse Braking Mode
Note : HIGH level input is 3.0V or more. LOW level input is 1.0V or less.
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BA6219B/BA6219BFP-Y
Motor driver ICs
!Pin descriptions (BA6219BFP-Y)
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 F
IN
(BA6219B)
Function N. C. Capacitor connection pin for preventing both output transistors being turned on at the same time N. C. Output HIGH voltage setting N. C. Logic input GND Logic input N. C.
10 OUT 2 Pin No. 1 2 3 4 5 6 7 8 9 Pin name GND OUT 1 CD1 VR IN1 IN2 VCC1 VCC2 CD2 GND Motor output
Capacitor connection pin for prevevting both output transistors being turned on at the same time
Pin name - CD1 - VR - IN1 GND IN2 - VCC1 VCC2 - CD2 - OUT2 - - - GND GND - - - OUT1 - GND
Function
Output HIGH voltage setting Logic input Logic input Control circuit power supply Output power supply Capacitor connection pin for preventing both output transistors being turned on at the same time Motor output
Small signal section power supply Motor output power supply N. C. Capacitor connection pin for preventing both output transistors being turned on at the same time N. C. Motor output N. C. N. C. N. C. GND GND N. C. N. C. N. C. Motor output N. C. GND
All the GND pins have to be connected.
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BA6219B/BA6219BFP-Y
Motor driver ICs
!Operation notes (1) A schematic for the internal circuit associated with the output voltage setting pin (Pin 4) is shown in Fig.7. The maximum output voltage (VOMAX.) is given by : VOMAX. =VCC1VSAT(Q1) VBE(Q2) VBE (Q3) VBE (Q4) For the condition of VR being equal to or less than VOMAX.,the relationship between the output voltage (VO)and the pin 4 voltage is given by: VO= VR +{(VBE(Q5) +VBE(Q6) +VBE(Q7)) (VBE(Q2) + VBE (Q3) +VBE (Q4))} Though VBE depends on the output power supply, VO is nearly equal to VR.
VCC1 Q1 Q2 Q3 Q5 Q6 Q7 VR
Fig.7
VCC1 Q1 Q2 Q3 Q5 Q6 Q7 VR GND
Fig.8
VCC2
Q4 OUT
VCC2
Q4 OUT
1) When the output voltage control pin (pin 4) is used VROutput voltage HIGH
(2) Thermal shutdown circuit The thermal shutdown circuit turns off the driver output if the chip temperature rises to about 180°. The shutdown signal is not latched. (3) Power supply impedance When the motor stops or starts, a rush current flows in the VCC and GND lines. Depending on the way of connecting a power supply decoupling capacitor (100µF), the control input voltage may become a negative value or the supply voltage may drop to below the output voltage. This can cause erratic operations due to parasitic effects. Make sure that pin voltages will not exceed the supply voltage by more than 0.3V or will not become less than the GND pin voltage by more than 0.3V. (4)VCC1 ,VCC2 , and VR are related to each other as shown in the output circuit diagram of Fig.8. Their values should be kept within the following ranges. Operating supply voltage ranges
Pin VCC1 VCC2 VR Voltage 8 to 18 8 to 18 Indicated in the following Unit V V -
VR voltage
Output voltage control range
Fig.9
2)
When the output voltage control pin (pin4) is not used, VR is either short-circuited to VCC1 or left OPEN.
(5) Input circuit
20k
5, 6pin 10k (6, 8pin)
10k
10k
Figures in parentheses are for the BA6219BFP-Y
Fig.10
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BA6219B/BA6219BFP-Y
Motor driver ICs
(6) The quality of these products have been carefully checked; however , use of the products with applied voltages, operating temperatures, or other parameters that exceed the absolute maximum rating given may result in the damage of the IC and the product it is used in. If the IC is damaged, the short mode and open modes cannot be specified, so if the IC is to be used in applications where parameters may exceed the absolute maximum ratings, then be sure to incorporate fuses, or other physical safety measures. (7) Input pins Voltage should never be applied to the input pins when the VCC voltage is not applied to the IC. Similarly, when VCC is applied, the voltage on each input pin should be less than VCC and within the guaranteed range for the electrical characteristics. (8) Back-rush voltage Depending on the ambient conditions, environment, or motor characteristics, the back-rush voltage may fluctuate. Be sure to confirm that the back-rush voltage will not adversely affect the operation of the IC. (9) Power dissipation The power dissipation will fluctuate depending on the mounting conditions of the IC and the ambient environment. Make sure to carefully check the thermal design of the application where ICs will be used. (10) Power consumption The power consumption by the IC varies widely with the power supply voltage and the output current. Give full consideration to the power dissipation rating and the thermal resistance data, to provide a thermal design so that none of the rating for the IC are exceeded. (11) ASO Make sure that the output current and supply voltage do not exceed the ASO values. (12) Precautions for input mode switching To ensure reliability, it is recommended that the mode switching for the motor pass once through the open mode. (13) There are no circuits built into these ICs that prevent in-rush currents. Therefore, it is recommended to place a current limiting resistor or other physical countermeasure. (14) If the potential of the output pin sways greatly and goes below the potential of ground, the operation of the IC may malfunction or be adversely affected. In such a case, place a diode between the output and ground, or other measure, to prevent this.
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BA6219B/BA6219BFP-Y
Motor driver ICs
!Application examples (1) BA6219B (2) BA6219BFP-Y
M 0.33µF CM
1
2
3
4
5
6
7
ZD
8 RC
9 10 CD 0.1µF C Vcc 12V 100µF
CD 0.1µF M CM
0.33µF
IN2 IN1
CD 0.1µF
ZD RC IN1 IN2
CD 0.1µF
+
Vcc 12V
C
100µF
Fig.11
Fig.12
ZD : Zener diode to set output voltage. Use any zener diode that is suitable for your application. Rc : Resistor used for reducing collector loss and limiting the short-circuit current. A resistance range of 3 to 10 is recommended. C : Power supply filtering capacitor. Place as near as possible to the VCC1 pin. CD : Capacitor to prevent both output transistors being turned on at the same time. CM : Capacitor to absorb surge voltage and prevent Parasitic oscillations.
!External dimensions(Unit : mm)
BA6219B BA6219BFP - Y
+ 26.5 - 0.3 + 25 - 0.2
R1.6
25
+ 3.6 - 0.2
+ 13.6 -0.2 + 2.75- 0.1
14
1.2
+ 7.8- 0.3
+ 27 - 0.5
+ 16.2 - 0.2
+ 8.4 - 0.3
+ 5.4 - 0.2
1
+ 1.95 - 0.1
13
+ 6.4 - 0.5
+ 1.9 - 0.1
0.11
1 2.54 0.6 0.8 1.3
10
0.8
+ 0.36 - 0.1
0.3Min. 0.15
+ 0.5 - 0.1
HSIP10
HSOP25
+ 0.25 - 0.1
1.6
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Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0