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TA7267TOSN/a306avaiBRIDGE DRIVER
TA7267TOSHIBAN/a1500avaiBRIDGE DRIVER


TA7267 ,BRIDGE DRIVERFEATURES I HSIP7-P-2.54A I0 Output Current Up to 1.0A (AVE.), and 3.0A (PEAK). Weight : 2.15g (Typ. ..
TA7267 ,BRIDGE DRIVERapplications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringe ..
TA7267BP ,BRIDGE DRIVERTA7267BP TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA7267BP BRIDGE DRIVER T ..
TA7270P ,5.8W DUAL AUDIO POWER AMPLIFIERTOSHIBA, ELECTRONIC ma I) Iqmnu? DDLEEIEI: l r y _----'-"-- _ - _.-------' 'ttfi, ri:')rfr'L" 02 ..
TA7271P ,5.8W DUAL AUDIO POWER AMPLIFIERTOSHIBA, ELECTRONIC ma I) Iqmnu? DDLEEIEI: l r y _----'-"-- _ - _.-------' 'ttfi, ri:')rfr'L" 02 ..
TA7272P ,DUAL POWER OPERATIONAL AMPLIFIERTA7272P TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA7272P DUAL POWER OPERATIO ..
TC514800AJLL-70 , 524288 WORD X 8 BIT DYNAMIC RAM
TC51832F-12 ,120ns; V(in/out/dd): -1 to +7V; 600mW; 50mA; 32,768 word x 8-bit CMOS pseudo static RAMFEATURES . Organization: 256K bit(32,768 word x 8 bit) . Fast Access Time and Low Power Dissipa ..
TC51832FL-10 ,100ns; V(in/out/dd): -1 to +7V; 600mW; 50mA; 32,768 word x 8-bit CMOS pseudo static RAML---. 082 _,__,J TOSHIBA tL0GTC/hEh0RY) LIBE D " “1037343 00220]: l] -T 32,768 WORD x 8 B ..
TC51832FL-12 ,120ns; V(in/out/dd): -1 to +7V; 600mW; 50mA; 32,768 word x 8-bit CMOS pseudo static RAMABSOLUTE MAXIMUM RATINGS VOUT Output Voltage Power Supply Voltag; TOPR Operating Temperature ..
TC51832PL-10 ,100ns; V(in/out/dd): -1 to +7V; 600mW; 50mA; 32,768 word x 8-bit CMOS pseudo static RAML---. 082 _,__,J TOSHIBA tL0GTC/hEh0RY) LIBE D " “1037343 00220]: l] -T 32,768 WORD x 8 B ..
TC51832PL-10 ,100ns; V(in/out/dd): -1 to +7V; 600mW; 50mA; 32,768 word x 8-bit CMOS pseudo static RAMFEATURES . Organization: 256K bit(32,768 word x 8 bit) . Fast Access Time and Low Power Dissipa ..


TA7267
BRIDGE DRIVER
TOSHIBA
TA7267BP
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7267BP
BRIDGE DRIVER
The TA7267BP is a Bridge Driver for brushed DC Motor
Rotation control.
Forward Rotation, Reverse Rotation, Stop and Braking
operations are available.
It's designed for Loading and Reel Motor driver for VCR
and Tape Deck, and any other consumer and industrial
applications.
TA7267BP have Operation Supply Voltage terminal and
Motor Driving Supply Voltage terminal independently,
therefore Servo control operation is applicable.
FEATURES HSIP7-P-2.54A
. Output Current Up to 1.0A (AVE.), and 3.0A (PEAK). Weight : 2.15g (Typ.)
0 4 Function Modes (CW, CCW, STOP and Brake) are
Controlled by 2 Logic Signals Fed Into 2 Input Terminals.
Build in Over Current Protector and Thermal Shut Down Circuit.
Operating Voltage Range : VCC(opr.) = 6--18V, VS(opr.) = 0~18V
BLOCK DIAGRAM
i i' l 6 VS
lN1 C D OUTI
CONTROL
C Dour2
THERMAL PROTECT 7: I
OVER CURRENT .?
. :IDGND
98091 0 E BA1
OTOSHIBA 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 spkcified
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.
OThe products described in this document are subject to the foreign exchange and foreign trade laws.
OThe 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 propert or other rights of the third
parties which may result from its use. No license is granted by implication or ot erwise under any intellectual
property or other rights of TOSHIBA CORPORATION or others.
OThe information contained herein is subject to change without notice.
1998-12-24 1/9
TOSHIBA TA7267BP
PIN FUNCTION
PIN No. SYMBOL FUNCTIONAL DESCRIPTION
1 lN1 Input terminal
2 lhl2 Input terminal
3 OUT1 Output terminal
4 GND GND terminal
5 OUT2 Output terminal
6 vs Voltage supply terminal
7 VCC Voltage supply terminal
INTERNAL CIRCUIT
VO LTAG E
REFERENCE
CURRENT SOURCE
CONTROL LOGIC
1998-12-24 2/9
TOSHIBA
TA7267BP
FUNCTION
lhll Ihl2 OUT1 OUT2 MODE
1 1 L L Brake
0 1 L H CW/CCW
1 0 H L CCW/CW
0 0 High Impedance Stop
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
PEAK Vcc (MAX.) 25
Supply Voltage OPERATE Vcc (opr.) 18 V
PEAK Io (PEAK) 3.0
Output Current AVE. IO (AVE.) 1.0 A
Power Dissipation (Tc = 25°C) PD 12.5 W
Operating Temperature Topr -30--75 ''C
Storage Temperature Tstg - 55~150 "C
1998-12-24 3/9
TOSHIBA TA7267BP
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Ta = 25°C)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
VCC = 18V, Output OFF
ICC1 Stop mode - 1.8 3 5
Supply Current - VCC = 18V, Output OFF mA
lCC2 CW/CCW mode - 8.3 12
Icc3 VCC = 18V, Brake mode - 8.5 13
Upper I/SIU - - 1.1
v = 18V, I = 0.1 A
Saturation Lower I/SI L CC 0 - - 1.0 V
Voltage Upper I/Situ - - 1.2 1.5
Lower VSZL VCC - 18V, lo - 1.0A - 1.05 1.4
Output Transistor Upper IL U - - 50
Leakage Current Lower IL L - VS - 25V - - 50 PA
V|N(H) . . 3.0 - -
Input Voltage 1, 2 - T; = 25°C, pinC) and pm (2) V
VIN(L) , - - 0.8
Input Current I, 2 liN1, 2 - Tj = 25°C, pinC) and pin 2) - 1 30 pzA
DiodeFor rdVolt VFU |-1A - 2.0 -
IO e owa o age VF L - F - - 1.3 -
Limiting Current Ist: - - - 2.5 - A
PD - Ta TRANSIENT THERMAL RESISTANCE
Rth (j-c) = 6°C/W
Rth (j-a) = 100°C/W
\ INFINITE HEAT SINK
Rm (°C/vw
Po (W)
20°C/W
8-1iy'C/W HEAT SINK N
HEAT SINK
PULSE WIDTH t (s)
NO HEAT SINK
"'""---.
1998-12-24 4/9
TOSHIBA TA7267BP
TEST CIRCUIT
SW10 v
18V C) Ci?, 1
a + [i r. SW9 la V c o swe
4V 0 ' Q A2 t F SW2 A A1 A3 b Ta
b SW3 b
51 a S VCC 6 5 SW
- W3 j] Ch 5 a
b IN1 TA7267BP Air,,, 'i,j'lii,'('--,
a I RL1
V3 " VTH b o-Iii) Ci) V0; , lo=0'1A
SW4 IN2 OUT2 b R
4 GND C o - L2
f c b 5’ IO = 1A
TEST METHOD
fll()8fi- SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9 TEST METER
Icc1 CLOSE OPEN b b a c c a a
Icc2 CLOSE OPEN a b a c c a a A1 Use
Icc2 CLOSE OPEN b a a c c a a
Iccg CLOSE OPEN a a a c c a a
I/SI U CLOSE CLOSE b a b a c a a -
v51 U CLOSE CLOSE a b b b c a a V1 Use, lo - 0.1 A
V51 L CLOSE CLOSE b a b c b a a -
v51 L CLOSE CLOSE a b b c a a a V2 Use, lo - 0.1 A
V52 U CLOSE CLOSE b a c a c a a -
v52 u CLOSE CLOSE a b c b c a a V1 Use, Ito - 1A
V52 L CLOSE CLOSE b a C C b a a -
v52 L CLOSE CLOSE a b c c a a a V2 Use, IO - 1A
VTH1 CLOSE CLOSE a b b c c b a .
VTH2 CLOSE CLOSE b a b c c b a V3 Use Function Check
ISC CLOSE CLOSE a b b c c a b A3 Use, SW10 = CLOSE
'IN1 OPEN CLOSE a b b c c a a
IINZ OPEN CLOSE b a b c c a a A2 Use
1998-12-24 5/9
TOSHIBA TA7267BP
NOTES WHEN USING THE TA7267BP
The full bridge driver, TA7267BP, is an IC specifically developed to control rotation switching in brush
motors. This IC has been carefully designed and strengthened to withstand counter-electromotive force
or start up rush current, which are problems in driving brush motors.
However, as with other power ICs, application circuits must be designed not to apply surge voltage or
excess current that exceeds the standard values.
In addition, when designing PCBs, make sure the wiring pattern does not cause oscillation, which can
result in equipment malfunction or destruction of the IC.
The following are notes on TA7267BP use. These should be reflected at the design stage.
1. Maximum voltage and current
The maximum supply voltage (pins © and (7)) for TA7267BP is 25 V.
Operating supply voltage is in the range of 6~18V. No voltage exceeding this range should be
applied to pins © or Ct.
The maximum current is 1.0A (AVE.) or 3.0A (PEAK). The circuit should be designed so that rush
current at startup does not exceed peak current, and average current at steady operation does not
exceed 1.0 A.
2. External diodes
As the block diagram shows, TA7267BP has internal diodes. The lower two diodes, which are the
IC's internal parasitic diodes, have a relatively large capacitance. However, when a motor with a
large reactance such as a core motor is driven, the upper two diodes may be damaged by the
motor's counter-electromotive force.
In such a case, connect external diodes in parallel.
The lower diodes should not be subjected to high current. Therefore, in such cases as brake
operation, external diodes should be connected.
3. PCB design
The following points concern the TA7267BP pattern design around the power supply line (pins ©
and (t) and the pattern design of the GND (pin (ip).
a. Ensure that the bypass capacitor between pin (B), pin Ct), and GND does not share impedance
with other lines.
b. The GND line should not be shared by other circuits.
c. The capacitance of the bypass capacitor should be as large as possible.
4. Oscillation remedies
To prevent noise from sparks when using brush motors, a capacitor may be connected between
both pins.
When using TA7267BP, the capacitor is connected between output pins 6) and ' This may cause
oscillation.
Therefore, avoid connecting the capacitor where possible. If connection is necessary to overcome
noise, connect resistors in series as shown in the technical data.
The values for the capacitor and resistors must be determined according to the motor. However,
recommended values are about 0.1 pF and 33 l
1998-12-24 6/9
TOSHIBA TA7267BP
APPLICATION NOTE
(1) Input circuit
Input circuit is shown in Fig.1. It's a "High Active" type.
If a voltage above specified VIN (H) value fed into input terminal that means "Logic 1", and the
voltage less than VIN(L) or connect to GND means "Logic 0".
And the circuit have a hysteresis for stable operation. (See Fig.2)
Vcc = Vs = 18V
RL = 16.0
------- Ta = 0''C
Ta = 25°C
- - - Ta = 75°C
0 1.0 1.4 1.8 2.2 2.6 3.0 3.4
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Fig.2 VIN -VOUT characteristics
1998-12-24 7/9
TOSHIBA TA7267BP
(2) Basic application circuit
INI cr-fi,
TA7267BP
Im o-fi)
(Note 1) Fig.3 shows the basic application circuit.
Optimum values of the C, R depend on the inherent constant of a motor and
parasitic C, R values around the circuit.
(Note 2) Utmost care is necessary in the design of the output line, vs, VCC and GND line
since IC may be destroyed due to short-circuit between outputs, air contamination
fault, or fault by improper grounding.
(Note 3) Be careful when switching the input because rush current may occur.
When switching, stop mode should be entered or current limitation resister R
should be inserted.
(Note 4) The IC functions cannot be guaranteed when turning power on of off.
Before using the IC for application, check that there are no problems.
(3) Additional diode
i) If the braking operation is so loose, connect a additional diode between each output to GND.
(See Fig.4)
ii) If the back electromotive pulse generated in output coil is so strong. Internally connected back
electromotive suppression diode may be damaged by this pulse. In such a case connect a
additional diode between each output to VCC- (See Fig.5)
VCC T VCC
0'6 0'9 x
TA7267BP TA7267BP
D- Ci)
Tr IT TiT Ir
"' Ar I
Fig.4 Fig.5
1998-12-24 8/9
TOSHIBA TA7267BP
OUTLINE DRAWING
HSIP7-P-2.54A Unit : mm
03.2i02 -
0.8i0.2
\U/ \l:
129i03
162i03
L__ 93
fa:< HTJ Ll +
0.88TYP
j 0-6-1%s
0.6 (hl EQOESCB
2.54 12:01
17.0i0.2
{mmmmmmmmmn
Weight : 2.159 (Typ.)
1998-12-24 9/9

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