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 : V
CC
= 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
V
CC
4
ST
5
INA
6
OA
7
10
P-GND
14
OB
15
OB
16
INB
17
L-GND
20
DG
OA
1
2002-02-27
TA8068F
PIN DESCRIPTION
PIN No.
1
SYMBOL
V
CC
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 100µA or less. If standby mode is not needed, the pin is connected to
V
CC
.
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 50µs (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 50µs (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 µs Delay
Short
-Circuit
Normal
Normal
2
2002-02-27
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 = 25°C)
CHARACTERISTIC
Supply Voltage
Input Voltage
Output Voltage
Output Current
Power Dissipation
Operation Temperature
Storage Temperature
Lead Temperature−Time
SYMBOL
V
CC
V
CC
V
IN
V
OUT
I
O
·AVE
P
D
T
opr
T
stg
T
sol
RATING
30
60 (1s)
−0.3~7
−0.3~V
CC
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 × 50 × 1.6 mm 50% Cu mounted
HSOP20-P-450-1.00 THERMAL RESISTANCE DATA
(Ta = 25°C)
CHARACTERISTIC
R
θ
j-a
R
θ
j-c
P
D1
P
D2
P
D3
P
D4
TEST CONDITION
―
―
Without radiation board
50 × 50 × 1.0 mm
50 × 50 × 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
3
2002-02-27
TA8068F
MAXIMUM OUTPUT CURRENT
(RECOMMENDED VALUES FOR APPLICATION)
Ambient
Temperature
Ta (°C)
25
Heat Radiation
Condition
IC itself
Using a board (P
D3
)
IC itself
Using a board (P
D3
)
IC itself
Using a board (P
D3
)
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
V
CC
= 16 V. Output current is defined by the maximum current in one channel.
ELECTRICAL CHARACTERISTICS
(V
CC
= 8~16 V, Tc =
−40~110°C,unless
otherwise
specified)
PIN
V
CC
INA/INB
TEST
CIR-
CUIT
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
CHARACTERISTIC
Current Consumption
Input Voltage
SYMBOL
I
CC
V
IL
V
IH
I
IL
I
IH
V
IL
V
IH
V
SAT
I
LEAK
V
OL
I
LEAK
ISD
TSD-H
TSD-L
V
SD
IST
t
pLH
t
pHL
TEST CONDITION
―
―
―
V
IN
= 0.4 V
V
IN
= 5 V
―
―
I
O
= 1.5 A/Ta = 25°C
V
O
= V
CC
I
OL
= 3 mA
V
O
= V
CC
―
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
µA
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
µA
V
µA
A
°C
V
µA
µs
―
―
―
―
V
CC
―
―
―
―
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.
4
2002-02-27
TA8068F
OUTPUT SATURATION VOLTAGE V
OL
(V)
V
OL
– I
OUT
2.0
10
9.6
PD1
P
D
max – Ta
1.5
(W)
Tc =
−40°C
1.0
MAXIMUM POWER DISSIPATION P
D
max
8
0.5
25°C
110°C
6
0
0
0.5
1.0
1.5
4
3.2
PD2
OUTPUT CURRENT I
OUT
(A)
2
PD3
1
PD4
0
0
50
100
150
200
AMBIENT TEMPERATURE Ta (°C)
V
SD
– Tc
40
5
I
SD
– Tc
(A)
I
SD
DETECTION CURRENT
4
DETECTION VOLTAGE V
SD
(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)
5
2002-02-27
stm32/stm8
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
