TA7279P/AP
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7279P,TA7279AP
DUAL BRIDGE DRIVER
The TA7279P, TA7279AP are dual bridge driver designed for DC
motor rotation control.
FEATURES
l Wide Range of Operating Voltage
: VCC (opr.) = 6~18 V (P, AP),
VS (opr.) = 0~16 V (P) / = 0~18 V (AP)
l Output Current Up to 1.0 A (AVE.), 3.0 A (PEAK)
l Built−in Thermal Shut Down and Current Limiter
l Input Hysteresis for Stable Operation
BLOCK DIAGRAM Weight: 3.00 g (Typ.)
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PIN FUNCTION
PIN No. SYMBOL FUNCTIONAL DESCRIPTION
1 VIN2−A
A−ch input terminal
2 VIN2−A
3 VI N1−A A−ch input terminal
4 OUT1−A A−ch output terminal
5 VS−A A−ch Motor drive power supply
6 OUT2−A A−ch output terminal
7 GND
GND terminal
8 GND
9 OUT2−B B−ch output terminal
10 VS−B B−ch Moter drive power supply
11 OUT1−B B−ch output terminal
12 VIN1−B B−ch input terminal
13 VIN2−B B−ch input terminal
14 VCC Logic power supply
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APPLICATION NOTE
(1) Input circuit
Input terminals of (2), (3), (12) and (13) Pin are all high active type and have a hysteresis.
3 µA Typ. of input current is required.
The input circuit is an active high type, as shown in the diagram. When voltage higher than the specified
VIN (H) is applied, the output is logic “H”. When voltage lower than the specified
VIN (L) is applied or if the input is grounded, the output is logic “L”. Since the input current IN flows to the
input when logic “H”, be careful with the output impedance at the previous step.
(2) Output circuit
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FUNCTION
IN1 IN2 OUT1 OUT2 MODE
1 1 L L Brake
0 1 L H CW / CCW
1 0 H L CCW / CW
0 0 High Impedance STOP
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
AP 25
Supply Voltage VCC (MAX.) V
P 20
AP 25
Motor Drive Voltage VS (MAX.) V
P 18
PEAK IO (PEAK) 3.0
Output Current A
AVE. IO (AVE.) 1.0
Power Dissipation PD (Note) 2.3 W
Operating Temperature Topr −30~75 °C
Storage Temperature Tstg −55~150 °C
Note: No heat sink.
ELECTRICAL CHARACTERISTICS (Ta = 25°C)
TEST
CHARACTERISTIC SYMBOL CIR− TEST CONDITION MIN TYP. MAX UNIT
CUIT
VCC = 18 V, Output Off, Stop
ICC1 1 14 28 41
mode
Supply Current VCC = 18 V, Output Off, mA
ICC2 1 10 29 38
CW / CCW mode
VCC = 18 V, Output Off,
ICC3 1 8 20 35
Brake mode
1 (High) VIN (H) ― Tj = 25°C 3.0 ― VCC
Input Operating Voltage V
2 (Low) VIN (L) ― Tj = 25°C ― ― 0.8
Input Current IIN 2 Sink, VIN = 3 V ― 3 10 µA
IO = 0.1 A,
Upper VSATU−1 3 ― ― 1.1
VCC = VS = 18 V
IO = 0.1 A,
Lower VSATL−1 3 ― ― 1.0
Output Saturation VCC = VS = 18 V
V
Voltage IO = 1.0 A,
Upper VSATU−2 3 ― 1.2 1.5
VCC = VS = 18 V
IO = 1.0 A,
Lower VSATL−2 3 ― 1.05 1.4
VCC = VS = 18 V
Upper ILU ― VS = 25 V ― ― 50
Leakage Current µA
Lower ILL ― VS = 25 V ― ― 50
Upper VFU 4 IF = 1 A ― 2.0 ―
Diode Forward Drop V
Lower VFL 4 IF = 1 A ― 1.3 ―
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TEST CIRCUIT 1.
ICC1, 2, 3
TEST CIRCUIT 2.
IIN (H), (L)
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TEST CIRCUIT 3.
VSATU−1, 2 / VSATL−1, 2
TEST CIRCUIT 4.
VFU, L
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APPLICATION CIRCUIT
Problems may result if a capacitor is inserted in parallel to the motor as a measure against noise.
If measures against noise are necessary, connect capacitors as shown in the diagram below.
A larger bypass capacitor between VCC and GND is effective against noise and other problems.
(A capacitance higher than 100 µF is recommended.)
Note: Utmost care is necessary in the design of the output line, VS and GND line since IC may be destroyed due to
short−circuit between outputs, air contamination fault, or fault by improper grounding.
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PACKAGE DIMENSIONS
HDIP14−P−500−2.54A Unit: mm
Weight: 3.00 g (Typ.)
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RESTRICTIONS ON PRODUCT USE 000707EBA
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
· The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
· The information contained herein is subject to change without notice.
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