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TA7736P/F
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7736P,TA7736F
DC MOTOR DRIVER IC
The TA7736P is a 3 phase Bi−directional motor driver IC.
It designed for use VCR, tape deck, floppy disk and record player
motor drivers.
It contains output power drivers, position sensing circuits, control
amplifier and CW / CCW control circuit.
FEATURES
3 Phase Bi−Directional Driver and Output Current Up to
1.0 A.
Few External Parts Required.
Wide Operating Supply Voltage Range
: V
CC (opr)
Forward and Reverse Rotation is Controlled Simply by Means
of a CW / CCW Control Signal Fed Into 16PIN.
High Sensitivity of Position Sensing Amplifier.
(V
= 10 mV
H
Hall Sensor “THS” Series.)
Surge Protect Diode Connected for All Input Terminals.
(Position Sensing, Control, CW / CCW Control Inputs.)
(Min.) = 7~20 V
(Typ.), Recommend to Use TOSHIBA Ga−As
p−p
Weight
DIP16−P−300−2.54A : 1.11g (Typ.)
HSOP16−P−300−1.00 : 0.50g (Typ.)
• TOSHIBA is continually working to improve the quality and the 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 observe standards of safety, and to avoid situations in which a malfunction or
failure of a TOSHIBA product 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 products
specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability
Handbook.
• The products described in this document are subject to foreign exchange and foreign trade control 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.
961001EBA2
2001−01−22 1/11
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TA7736P/F
BLOCK DIAGRAM
PIN FUNCTION
PIN No.
P F
1 5 V
2 6 V
3 7 H
4 8 H
5 9 H
6 10 H
7 11 H
8 12 H
9 FIN GND GND terminal
10 3 R
11 15 L
12 16 L
13 1 V
14 2 L
15 13 R
16 4 FRS Forward rotation / Reverse rotation switch terminal
F: (14) Pin: No connection
SYMBOL FUNCTION DESCRIPTION
−
Control Amp. negative terminal
IN
+
Control Amp. positive terminal
IN
+
a−phase Hall Amp. positive input terminal
a
−
a−phase Hall Amp. negative input terminal
a
+
b−phase Hall Amp. positive input terminal
b
−
b−phase Hall Amp. negative input terminal
b
+
c−phase Hall Amp. positive input terminal
c
−
c−phase Hall Amp. negative input terminal
c
Output current detection terminal
c−phase drive output terminal
b−phase drive output terminal
power supply input terminal
a−phase drive output terminal
Output current detection terminal
CC
F
c
b
a
F
2001−01−22 2/11
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TA7736P/F
INPUT VS OUTPUT
V
shows voltage drop at RF.
NF
This is in the case of star connection, when coil current is I
V
See the following circuit.
NF
= RF·I
L
L
Further, if inputs (pin (1), (5), pin (2), (6)) are shorted or V1 ≥ V2, torque at the circuit, becomes zero. However,
this zero torque state also can be obtained by setting FRS input (pin (16), (4)) to specified voltage or by placing
the circuit in open state and this is rather advantageous as current con sumption is less.
2001−01−22 3/11
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TA7736P/F
FUNCTION
(PIN (16), (4))
L
H
M
POSITION SENSING INPUT COIL OUTPUT FRS
H
a
1 0 1 H L M
1 0 0 H M L
1 1 0 M H L
0 1 0 L H M
0 1 1 L M H
0 0 1 M L H
1 0 1 L H M
1 0 0 L M H
1 1 0 M L H
0 1 0 H L M
0 1 1 H M L
0 0 1 M H L
1 0 1
1 0 0
1 1 0
0 1 0
0 1 1
0 0 1
H
b
H
c
L
a
High Impedance
L
b
L
c
Note: “1” of Hole element input means that voltage above + 10 mV is applied to the positive side of each hall
element from the negative side and “0” means that voltage above +10 mV is applied to the negative side
from the positive side. In this case, needless to say, DC potential must be within the specified common mode
voltage range of hell element input.
Further, “H”, “M” and “L” of output mean V
CC
− V
SAT1
“M” of FRS input mean application of voltage within specified values of V
Further, by applying required voltage for control input (V
1
≈
VCC and V
2
+, VIN−), measure the circuit in operating state.
IN
, respectively, and “L”, “H” and
SAT2
, VR and VS, respectively.
F
MAXIMUM RATINGS
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 26 V
Output Current IO 1.0 A
Power Dissipation
Operating Temperature T
Storage Temperature T
(Ta = 25°C)
TA7736P 1.2
TA7736F
PD (Note)
opr
stg
0.9
−30~75 °C
−55~150 °C
W
Note: No heat sink
2001−01−22 4/11
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TA7736P/F
ELECTRICAL CHARACTERISTICS
CHARACTERISTIC SYMBOL
I
CC1
Quiescent Current
Input Offset Voltage V
Residual Output Voltage V
Voltage Gain G
Saturation Voltage
Upper V
Lower V
Cut−off Current
Upper I
Lower I
Position Sensing Input Sensitivity V
Maximum Position Sensing Input
Voltage
Input Operating
Position CMR
Voltage
Control CMR
CW V
Rotation Control Input
Voltage
STOP V
CCW V
TEST CIRCUIT 1
I
CC2
I
CC3
IO
OR
V
SAT1
SAT2
OC1
OC2
H
V
MAX. 1 ― ― 400 mV
H
H
C
F
S
R
(Unless otherwise specified, VCC = 12 V, Ta = 25°C)
TEST
CIR−
CUIT
1
1 ― 40 ― mV
1 V1 = V2 = 7 V ― 0 10 mV
1 R
2
―
1 ― 10 ― mV
1 2.0 ―
1 2.0 ―
1 ― 0 0.4 V
1 2.2 2.7 3.2 V
1 4.8 5.0 5.8 V
TEST CONDITION MIN TYP. MAX UNIT
FRS = Open 2 4 7
FRS = 5 V 2 5 9
= 22 V, FRS = GND 2 5 9
V
CC
= 2.2 Ω ― 15.0 ―
NF
IL = 400 mA ― 1.0 1.5
I
= 400 mA ― 0.4 1.0
L
V = 20 V ― ― 20
V = 20 V ― ― 20
−
V
CC
2.5
V
CC
2.5
mA
V
µA
V
−
V
2001−01−22 5/11
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TA7736P/F
TEST CIRCUIT 2
TA7736P TA7736F
2001−01−22 6/11
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APPLICATION CIRCUIT 1
(Basic application circuit)
TA7736P/F
Note 1: Set the Zener diode V
(V
setting recommended at 2.5 to 9.0 V; 5.0 V depending on temperature characteristics. With load control
Z
input pins (1) and (5), the DC electric potential becomes V
Note 2: R
Note 3: Connect when dive to control input occurs.
is set depending on the coil impedance, F / V transfer voltage (control input) and required starting torque.
F
Set between 0.3 and 5 Ω.
to the control signal input DC level.
Z
+ RF, IL.)
Z
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APPLICATION CIRCUIT 2
TA7736P/F
(TC9142AP + TA7736P
1
PLL FDD)
3
2
Note 1: Rf is a feed back Resistor that’s voltage drop is equal to Input Voltage (V2 − V1) in this application with feed
back by Zoner Diode.
Note 2: Required X’ tal frequency is calculated by following
f
= (no·a / 60) ·128·20 N = 42.6 no·a·N (at PIN (10) “High” state)
X
f
= (no·a / 60) ·128·27 N = 57.6 no·a·N (at PIN (10) “Low” state)
X
PIN (4) PIN (5) N
H H 32
L H 128
H L 4
Note 3: Recommended value of RA and RB is 50 kΩ to 300 kΩ
The combination ratio of F / V and P / V output is designed by changing these value. For example, if you
want more F / V conversion gain compare to P / V’s one for fast system initial start up. Use a higher value of
R
compare to RA.
B
Note 4: TC9142P’s FG Amplifier gain is 30 dB (Typ.) and required input signal is over 30 mV
If the FG doesn’t output over this value.
Required a Front Amplifier.
Where
no : Required Rotation Speed (rpm)
a : Number of FG pulse (pulse / rotation)
N : Count Down Ratio (4.32 or 128)
rms
.
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APPLICATION CIRCUIT 3
(TC9203AF + TA7736F 3.5 PLL HDD)
TA7736P/F
Note: Required X’tal frequency is calculated by
following.
R
fx =
M : Lock range switch (20 / 27)
fx : X’ tal frequency (Hz)
FG : Number of FG pulse
R : Revolution of motor (rpm)
N : Count down Ratio (5 / 6 / 12)
× FG × 128 × M × N
60
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TA7736P/F
OUTLINE DRAWING
DIP16−P−300−2.54A Unit: mm
Weight: 1.11 g (Typ.)
2001−01−22 10/11
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TA7736P/F
OUTLINE DRAWING
HSOP16−P−300−1.00 Unit: mm
Weight: 0.50 g (Typ.)
2001−01−22 11/11
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