TA7291AP/AS(J)/AF
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA7291AP,TA7291AS(J),TA7291AF
Full-Bridge Driver for DC Motors (driver for controlling the forward and reverse rotations)
The TA7291AP/TA7291AS (J)/TA7291AF is a full-bridge driver to
control the forward and reverse rotations. Each driver can select
one of four modes: CW, CCW, stop, brake.
The TA7291AP is designed to provide output currents of 1.0 A (typ.)
and 2.0 A (peak). The TA7291AS (J)/TA7291AF is designed to
provide output currents of 0.4 A (typ.) and 1.2 A (peak).
There are two different power supply pins for each driver: one on
the output side and the other on the control side of the driver. Also,
there is the V
ref
pin on the output side. This pin is available for
adjusting the voltage supplied to the motor.
The input circuit of the driver is compatible with CMOS logic
because it draws a small amount of input current.
TA7291AP
TA7291AS (J)
Features
·
Wide range of operating voltage: V
CC (opr.)
= 4.5 V to 27 V
: V
S (opr.)
= 4.5 V to 27 V
: V
ref (opr.)
= 4.5 V to 27 V
V
ref
must be
≤
V
S
.
·
·
·
·
·
Output current: AP type 1.0 A (typ.) 2.0 A (peak)
: AS (J)/AF type 0.4 A (typ.) 1.2 A (peak)
Thermal shutdown and overcurrent protection
Flyback diodes
Hysteresis for all inputs
Standby mode available
TA7291AF
Weight
HSIP10-P-2.54: 2.47 g (typ.)
SIP9-P-2.54A: 0.92 g (typ.)
HSOP16-P-300-1.00: 0.50 g (typ.)
1
2003-02-14
TA7291AP/AS(J)/AF
Block Diagram
V
CC
7/2/11
4/8/5
8/6/15
V
S
V
ref
REG
2/7/4
OUT1
M
Protection
circuit
(TSD)
10/3/13
OUT2
5/9/7
IN1
IN2
6/1/9
1/5/1
GND
TA7291AP/TA7291AS (J)/TA7291AF
Pin Function
Symbol
V
CC
V
S
V
ref
GND
IN1
IN2
OUT1
OUT2
Pin No.
AP
7
8
4
1
5
6
2
10
AS (J)
2
6
8
5
9
1
7
3
AF
11
15
5
1
7
9
4
13
Function Description
Supply voltage pin for Logic
Supply voltage pin for motor driver
Supply voltage pin for control
Ground pin
Input pin
Input pin
Output pin
Output pin
AP type: Pin 3 and 9 are NC.
AS (J) type: Pin 4 is NC.
AF type: Pin 2, 3, 6, 8, 10, 12, 14, and 16 are NC.
For F type, we recommend the fin be connected to ground.
2
2003-02-14
TA7291AP/AS(J)/AF
Function
Input
IN1
0
1
0
1
IN2
0
0
1
1
OUT1
∞
H
L
L
Output
OUT2
∞
L
H
L
Mode
Stop
CW/CCW
CCW/CW
Brake
∞:
High impedance
Note: Inputs are all active high.
Maximum Ratings
(Ta = 25°C)
Characteristics
Supply voltage
Symbol
V
CC
V
CC (opr.)
V
S
V
S (opr.)
V
ref
V
ref (opr.)
AP type
AS (J)/AF type
ＡP
type
ＡS(J)/AF
type
AP type
Power dissipation
AS (J) type
AF type
Operating temperature
Storage temperature
T
opr
T
stg
P
D
I
O (peak)
Rating
30
27
30
27
30
27
2.0
1.2
1.0
0.4
12.5
0.95
1.4
−30
to 75
−55
to 150
(Note 1)
(Note 2)
(Note 3)
°C
°C
W
A
Unit
V
Motor drive voltage
V
Reference voltage
V
Peak
Output
current
Typ.
I
O (typ.)
Note 1: Tc
=
25°C
Note 2: No heat sink
Note 3: When mounted on a PCB (PCB area: 60 mm
´
30 mm
´
1.6 mm, Cu area: 50% or more)
Wide range of operating voltage: V
CC (opr.)
=
4.5 V to 27 V
V
S (opr.)
=
4.5 V to 27 V
V
ref (opr.)
=
4.5 V to 27 V
V
ref
≤
V
S
3
2003-02-14
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