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TA8068F
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8068F
Intelligent Stepping Motor Driver
The TA8068F is a stepping motor driver with a current capacity of 1.5A. Inputs INA and INB are combined to control the four outputs. Since the inputs are TTL-compatible, this IC can be controlled directly from a CPU or other control system. The IC also incorporates various protective functions as well as a self-diagnostic function for diagnostic function for diagnostic output.
FEATURES
* * * * * * * Output current capacity : 1.5 A (max) Low standby current : 0.1 mA (max) Self-diagnostic Output : On Short-Circuit Detection Weight: 0.79 g (typ.)
Built-in Protective Functions : Over-Voltage Protection/ Short-Circuit Protection(latch) / Thermal-Shutdown Recommended operating supply voltage range : VCC = 8~16 V Separate GND for output and logic control sections HSOP20-Pin Power Flat Pakage
BLOCK DIAGRAM AND PIN LAYOUT
LATCH R S R
R
CONTROL LOGIC
MULT PROTECTION
1 VCC
4
ST
5 INA
6 OA
7
10 P-GND
14
OB
15 OB
16 INB
17 L-GND
20
DG
OA
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TA8068F
PIN DESCRIPTION
PIN No. 1 SYMBOL VCC
ST
DESCRIPTION Power supply pin. This pin has a function to turn off the output when the applied voltage exceeds 30V (Typ.), thus protecting the IC and the motor load. When this pin is opened or grounded, the output turns off, thus reducing the current consumption to 100A or less. If standby mode is not needed, the pin is connected to VCC. This is input terminal which controls output condition of pin 6 and pin 7. PNP-type voltage comparator is built in. PNP-type complementary output pin with a current capacity of 1.5A. This pin is controlled by the input from pin 5. When the output is supplied with a current exceeding the detection current (4A Typ.) because of load short-circuit, the output is latched to the OFF state after a 50s (Typ.) delay in order to protect the IC. Output pin of the inversion of pin 6. This terminal has the same function as pin 6 and is controlled by pin 5. Ground terminal of output section which is usually connected with pin 17. Output pin of the inversion of pin 15. This terminal has the same function as pin 6 and is controlled by pin 16. This terminal has the same function as pin 6 and is controlled by pin 16. This is input terminal which controls output condition of pin 14 and pin 15. PNP-type voltage comparator is built in. Ground terminal of logic control section which is usually connected with pin 10. Self-diagnostic output pin. This signal goes low when the output is short-circuited while the input is on (high). The output will be latched after a 50s (Typ.) delay when the load is short-circuited.This pin supplies an NPN open-collector output. Not connected. (Electrically, this pin is completely open.)
4
5
INA
6
OA
7 10 14 15 16 17 20 2, 3, 8, 9, 11, 12, 13, 18, 19
OA
P-GND
OB
OB INB L-GND
DG
N.C
TIMING CHART
INA INB OA OB
OA OB
4 A (typ.)
IO (OA)
DG
ST
50 s Delay Short -Circuit
Normal
Normal
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TA8068F
TRUTH TABLE INPUT / OUTPUT
INPUT INA L L H H INB L H L H
ST
OUTPUT OA OFF OFF ON ON OFF OFF
OA
ON ON OFF OFF OFF OFF
OB OFF ON OFF ON OFF OFF
OB
ON OFF ON OFF OFF OFF
DG
H H H H L OPEN
OFF OFF OFF OFF OFF OFF
MAXIMUM RATINGS (Ta = 25C)
CHARACTERISTIC Supply Voltage Input Voltage Output Voltage Output Current Power Dissipation Operation Temperature Storage Temperature Lead Temperature-Time SYMBOL VCC VCC VIN VOUT IO*AVE PD Topr Tstg Tsol RATING 30 60 (1s) -0.3~7 -0.3~VCC 1.5 2.0 (*1) (*2) UNIT V V V A W C C C
-40~110 -55~150 260 (10s)
Note *1: Maximum current value when an infinite heat sink is used. Please refer to the table "MAXIMUM OUTPUT CURRENT (RECOMMENDED VALUES FOR APPLICATION)" when designing an application circuit. Note *2: 50 x 50 x 1.6 mm 50% Cu mounted
HSOP20-P-450-1.00 THERMAL RESISTANCE DATA (Ta = 25C)
CHARACTERISTIC R j-a R j-c PD1 PD2 PD3 PD4 TEST CONDITION Without radiation board 50 x 50 x 1.0 mm 50 x 50 x 1.6 mm Iron board mounted 50% Cu mounted RATING 125 13 9.6 3.2 2.0 1.0 UNIT C/W C/W W W W W
Without radiation board
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TA8068F
MAXIMUM OUTPUT CURRENT (RECOMMENDED VALUES FOR APPLICATION)
Ambient Temperature Ta (C) 25 Heat Radiation Condition IC itself Using a board (PD3) IC itself Using a board (PD3) IC itself Using a board (PD3) Allowable Rating (DC) Power dissipation Output current (W) (mA) 1.0 2.0 0.52 1.04 0.36 0.72 330 720 50 350 0 150 Allowable Power Dissipation (pulse: 10 sec) Power dissipation Output current (W) (mA) 2.9 3.9 1.5 2.0 1.0 1.4 1000 1040 550 720 330 500
85
105
VCC = 16 V. Output current is defined by the maximum current in one channel.
ELECTRICAL CHARACTERISTICS (VCC = 8~16 V, Tc = -40~110C,unless otherwise
specified)
PIN VCC INA/INB TEST CIRCUIT
CHARACTERISTIC Current Consumption Input Voltage
SYMBOL ICC VIL VIH IIL IIH VIL VIH VSAT ILEAK VOL ILEAK ISD TSD-H TSD-L VSD IST tpLH tpHL
TEST CONDITION VIN = 0.4 V VIN = 5 V IO = 1.5 A/Ta = 25C VO = VCC IOL = 3 mA VO = VCC OUT = ON OFF OUT = OFF ON
ST = GND
MIN 12 2.4 -50 3.0 1.8 27.5
TYP. 25 1.25 4 160 130 30 1 1
MAX 40 0.8 10 0.8 1.5 10 0.3 10 6 33 100 10 10
UNIT mA V
Input Current
INA/INB
A
Input Voltage
ST
V
Output Saturation Voltage Output Leakage Current Output Voltage Output Leakage Current Over-current Detection Shutdown Temperature Over-voltage Detection Standby Current Transfer Delay Time
OA, OA OB, OB OA, OA OB, OB
DG
V A V A A C V A s
VCC

Note: The parameter values above are guaranteed in the operating voltage rage of 8 V to 16 V. If the guaranteed range is exceeded in practical use, make sure that the IC operates normally in application.
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TA8068F
OUTPUT SATURATION VOLTAGE VOL (V)
VOL - IOUT
2.0 10 9.6 PD1
PD max - Ta
1.5
(W)
Tc = -40C
1.0
MAXIMUM POWER DISSIPATION PD max
8
0.5
25C
110C
6
0 0
0.5
1.0
1.5
4 3.2 PD2
OUTPUT CURRENT IOUT
(A)
2
PD3
1
PD4
0 0
50
100
150
200
AMBIENT TEMPERATURE Ta (C)
VSD - Tc
40 5
ISD - Tc (A) ISD DETECTION CURRENT
4
DETECTION VOLTAGE VSD
(V)
35
3
30
2
25
1
20 -40
0
40
80
120
0 -40
0
40
80
120
CASE TEMPERATURE Tc
(C)
CASE TEMPERATURE Tc
(C)
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TA8068F
EQUIVALENT CIRCUIT
OA 6
OA 7
OB 15
OB 14
P-GND 10
THERMALSHUTDOWN OVER-VOLTAGE PROTECTION
CONTROL LOGIC
SHORTCIRCUIT PROTECTION CONSTANT VOLTAGE
DG 20
VCC 1
ST 4
INA 5
INB 16
L-GND 17
APPLICATION CIRCUIT
V 5V 10 F* 10
10 k
VCC
VDD RS CPU PO1 SYSTEM PO2 VSS PO3
OA OA SM
DG
ST
TA8068F
OB INA INB L-GND P-GND OB
*: Connect this capacitor as close to the IC as possible
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TA8068F
PACKAGE DIMENSIONS
Weight: 0.79 g (Typ.)
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TA8068F
RESTRICTIONS ON PRODUCT USE
000707EAA_S
* 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 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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