TB67S145FTG
Toshiba BiCD Process Integrated Circuit Silicon Monolithic
TB67S145FTG
Serial controlled unipolar stepping motor driver
The TB67S145 is a serial controlled PWM chopping type, 2 phase
unipolar stepping motor driver. Using the BiCD process, the TB67S
145 can be operated with VM voltage of 45V, output voltage of
84V, and output current of 3.0A at max (absolute maximum ratings).
FTG
P-WQFN48-0707-0.50-003
Weight: 0.1 g (Typ.)
Features
・BiCD
process monolithic integrated circuit.
・Capable
of operating one unipolar stepping motor
・PWM
controlled constant current drive
・Full,
half step resolution
・Low
on resistance (0.25Ω(Typ.)) output MOSFET
・High
voltage and current (for specification, please refer to the absolute maximum ratings and operation ranges).
・Brake
mode function
・Standby
(low power) mode function
・4
bit-16 setting torque adjust function
・Serial
to parallel convert circuit (8bit shift register) built in.
・Capable
of 3 line logic (Data/Clock/Latch signal) output function (controllable by cascade connection)
・Error
detect feedback signal output function (Over current/Thermal shutdown).
・Error
detect function (Thermal shutdown(TSD), Over current(ISD), and Low voltage(POR).
・Built-in
VCC regulator for internal circuit use.
・Fixed
off time can be adjusted by external components.
Note) Please be careful about the thermal conditions during use.
©2014 TOSHIBA CORPORATION
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TB67S145FTG
Application Notes
All the grounding wires of the device must run on the solder mask on the PCB and be externally terminated at
only one point. Also, a grounding method should be considered for efficient heat dissipation.
Careful attention should be paid to the layout of the output, VM and GND traces, to avoid short circuits across
output pins or to the power supply or ground. If such a short circuit occurs, the device may be permanently
damaged.
Also, the utmost care should be taken for pattern designing and implementation of the device since it has power
supply pins (VM, RSGND, OUT, GND) through which a particularly large current may run. If these pins are
wired incorrectly, an operation error may occur or the device may be destroyed.
The logic input pins must also be wired correctly. Otherwise, the device may be damaged owing to a current
running through the IC that is larger than the specified current.
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Pin explanations
TB67S145FTG (WQFN48)
Pin No.1 to 28
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pin Name
Non connection
Non connection
Serial register clear pin
Non connection
Register gate pin
Standby control pin
Brake control pin
Ground pin
Non connection
Non connection
Non connection
Non connection
Motor output
Motor output
A+ pin
A+ pin
Function
NC
NC
CLR
NC
GATE
STANDBY
BRAKE
GND
NC
NC
NC
NC
OUTA+
OUTA+
RSGNDA
RSGNDA
OUTA-
OUTA-
OUTB-
OUTB-
RSGNDB
RSGNDB
OUTB+
OUTB+
NC
VCOM
VCOM
NC
Ach current sense ground pin
Ach current sense ground pin
Motor output
Motor output
Motor output
Motor output
A-pin
A-pin
B-pin
B-pin
Bch current sense ground pin
Bch current sense ground pin
Motor output
Motor output
B+ pin
B+ pin
Non connection
Common pin
Common pin
Non connection
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嵌入式系统
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