TOSHIBA TA8068F

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)
·
Built−in Protective Functions : Over-Voltage Protection/ Short-Circuit Protection(latch) / Thermal-Shutdown
·
Self−diagnostic Output
·
Recommended operating supply voltage range : VCC = 8~16 V
·
Separate GND for output and logic control sections
·
HSOP20-Pin Power Flat Pakage
Weight: 0.79 g (typ.)
: On Short-Circuit Detection
BLOCK DIAGRAM AND PIN LAYOUT
R
LATCH
S
R
CONTROL LOGIC
MULT PROTECTION
R
1
4
5
6
7
10
14
15
16
17
20
VCC
ST
INA
OA
OA
P-GND
OB
OB
INB
L-GND
DG
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TA8068F
PIN DESCRIPTION
PIN No.
SYMBOL
DESCRIPTION
1
VCC
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.
4
ST
When this pin is opened or grounded, the output turns off, thus reducing the current
consumption to 100µA or less. If standby mode is not needed, the pin is connected to
VCC.
5
INA
This is input terminal which controls output condition of pin 6 and pin 7. PNP-type voltage
comparator is built in.
6
OA
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 50µs (Typ.) delay in order to protect the IC.
7
OA
Output pin of the inversion of pin 6. This terminal has the same function as pin 6 and is
controlled by pin 5.
10
P-GND
14
OB
Output pin of the inversion of pin 15. This terminal has the same function as pin 6 and is
controlled by pin 16.
15
OB
This terminal has the same function as pin 6 and is controlled by pin 16.
16
INB
This is input terminal which controls output condition of pin 14 and pin 15. PNP-type
voltage comparator is built in.
17
L-GND
20
DG
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 50µs (Typ.) delay when the load is
short-circuited.This pin supplies an NPN open-collector output.
2, 3, 8, 9, 11,
12, 13, 18, 19
N.C
Not connected. (Electrically, this pin is completely open.)
Ground terminal of output section which is usually connected with pin 17.
Ground terminal of logic control section which is usually connected with pin 10.
TIMING CHART
INA
INB
OA
OB
OA
OB
4 A (typ.)
IO (OA)
DG
50 µs Delay
ST
Normal
Short
-Circuit
2
Normal
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TA8068F
TRUTH TABLE INPUT / OUTPUT
INPUT
OUTPUT
INA
INB
ST
OA
OA
OB
OB
DG
L
L
H
OFF
ON
OFF
ON
OFF
L
H
H
OFF
ON
ON
OFF
OFF
H
L
H
ON
OFF
OFF
ON
OFF
H
H
H
ON
OFF
ON
OFF
OFF
―
―
L
OFF
OFF
OFF
OFF
OFF
―
―
OPEN
OFF
OFF
OFF
OFF
OFF
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC
SYMBOL
RATING
VCC
30
VCC
60 (1s)
VIN
−0.3~7
V
Output Voltage
VOUT
−0.3~VCC
V
Output Current
IO·AVE
1.5
(*1)
A
Power Dissipation
PD
2.0
(*2)
W
Operation Temperature
Topr
Storage Temperature
Lead Temperature−Time
Supply Voltage
Input Voltage
UNIT
V
−40~110
°C
Tstg
−55~150
°C
Tsol
260 (10s)
°C
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 × 50 × 1.6 mm 50% Cu mounted
HSOP20-P-450-1.00 THERMAL RESISTANCE DATA (Ta = 25°C)
CHARACTERISTIC
TEST CONDITION
RATING
UNIT
Rθ j-a
―
125
°C/W
Rθ j-c
―
13
°C/W
PD1
Without radiation board
9.6
W
PD2
50 × 50 × 1.0 mm
Iron board mounted
3.2
W
PD3
50 × 50 × 1.6 mm
50% Cu mounted
2.0
W
PD4
Without radiation board
1.0
W
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TA8068F
MAXIMUM OUTPUT CURRENT (RECOMMENDED VALUES FOR APPLICATION)
Ambient
Temperature
Ta (°C)
25
85
105
Heat Radiation
Condition
Allowable Rating
(DC)
Power dissipation
Output current
(W)
(mA)
Allowable Power Dissipation
(pulse: 10 sec)
Power dissipation
Output current
(W)
(mA)
IC itself
1.0
330
2.9
1000
Using a board (PD3)
2.0
720
3.9
1040
IC itself
0.52
50
1.5
550
Using a board (PD3)
1.04
350
2.0
720
IC itself
0.36
0
1.0
330
Using a board (PD3)
0.72
150
1.4
500
VCC = 16 V. Output current is defined by the maximum current in one channel.
ELECTRICAL CHARACTERISTICS (VCC = 8~16 V, Tc = −40~110°C,unless otherwise
specified)
CHARACTERISTIC
Current Consumption
Input Voltage
Input Current
Input Voltage
SYMBOL
PIN
TEST
CIRCUIT
TEST CONDITION
MIN
TYP.
MAX
UNIT
ICC
VCC
―
―
12
25
40
mA
―
―
―
―
0.8
―
―
2.4
―
―
VIL
VIH
IIL
IIH
VIL
VIH
INA/INB
INA/INB
ST
―
VIN = 0.4 V
―
VIN = 5 V
−50
―
―
―
―
10
―
―
―
―
0.8
―
―
3.0
―
―
V
µA
V
Output Saturation Voltage
VSAT
OA, OA
OB, OB
―
IO = 1.5 A/Ta = 25°C
―
1.25
1.5
V
Output Leakage Current
ILEAK
OA, OA
OB, OB
―
VO = VCC
―
―
10
µA
―
IOL = 3 mA
―
―
0.3
V
―
VO = VCC
―
―
10
µA
A
Output Voltage
Output Leakage Current
Over-current Detection
VOL
ILEAK
DG
ISD
―
―
1.8
4
6
TSD-H
―
―
OUT = ON → OFF
―
160
―
TSD-L
―
―
OUT = OFF → ON
―
130
―
Over-voltage Detection
VSD
―
―
27.5
30
33
V
Standby Current
IST
VCC
―
―
―
100
µA
tpLH
―
―
―
―
1
10
tpHL
―
―
―
―
1
10
Shutdown Temperature
Transfer Delay Time
―
―
ST = GND
°C
µs
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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VOL – IOUT
PD max – Ta
10
2.0
PD1
(W)
9.6
1.5
MAXIMUM POWER DISSIPATION PD max
OUTPUT SATURATION VOLTAGE VOL (V)
TA8068F
Tc = −40°C
1.0
110°C
25°C
0.5
0
0
0.5
1.0
1.5
OUTPUT CURRENT IOUT
(A)
8
6
4
3.2
2
1
PD2
PD3
PD4
0
0
50
100
150
200
AMBIENT TEMPERATURE Ta (°C)
VSD – Tc
ISD – Tc
5
ISD
35
DETECTION CURRENT
DETECTION VOLTAGE VSD
(V)
(A)
40
30
25
20
−40
0
40
80
CASE TEMPERATURE Tc
4
3
2
1
0
−40
120
(°C)
0
40
80
CASE TEMPERATURE Tc
5
120
(°C)
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TA8068F
EQUIVALENT CIRCUIT
OA
7
OA
6
OB
14
OB
15
P-GND
10
THERMALSHUTDOWN
OVER-VOLTAGE
PROTECTION
CONTROL
LOGIC
SHORTCIRCUIT
PROTECTION
DG
20
CONSTANT
VCC
1
VOLTAGE
INA
5
INB
16
ST
4
L-GND
17
APPLICATION CIRCUIT
V
5V
RS
CPU
PO1
SYSTEM
PO2
VSS
PO3
10 µF*
10 kΩ
VDD
10 Ω
VCC
DG
ST
OA
OA
TA8068F
SM
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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