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PDF LV8712T Data sheet ( Hoja de datos )
| Número de pieza | LV8712T | |
| Descripción | PWM Constant-Current Control Stepping Motor Driver | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1674A
LV8712T
Bi-CMOS LSI
PWM Constant-Current Control
Stepping Motor Driver
Overview
The LV8712T is a stepping motor driver of the micro-step drive corresponding to supports 2W 1-2 phase excitation. It is
the best for the drive of the stepping motor for a scanner and a small printer.
Features
• Single-channel PWM constant-current control stepping motor driver incorporated.
• Excitation mode can be set to 2-phase, 1-2 phase, W1-2 phase , or 2W1-2 phase
• Microstep can control easily by the CLK-IN input.
• Power-supply voltage of motor
: VM max = 18V
• Output current
: IO max = 0.8A
• Output ON resistance
: RON = 1.1Ω (upper and lower total, typical, Ta = 25°C )
• A thermal shutdown circuit and a low voltage detecting circuit are built into.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Motor supply voltage
Symbol
VM max
Conditions
Logic supply voltage
Output peak current
Output continuousness current
Logic input voltage
Allowable power dissipation
VCC max
IO peak
IO max
VIN
Pd max
Each 1ch, tw ≤ 10ms, duty 20%
Each 1ch
*
Operating temperature
Topr
Storage temperature
Tstg
* Specified circuit board : 57.0mm×57.0mm×1.7mm, glass epoxy 2-layer board.
Ratings
18
6
1.0
800
-0.3 to VCC + 0.3
1.35
-20 to +85
-55 to +150
Unit
V
V
A
mA
V
W
°C
°C
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
20211 SY/51210 SY 20100216-S00005 No.A1674-1/14
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
Pin Functions
Pin No. Pin Name
1 RST
2 OE
7 STEP
8 ATT1
9 ATT2
13 MD2
14 MD1
24 FR
Pin Functtion
Excitation reset signal input pin.
Output enable signal input pin.
STEP signal input pin.
Motor holding current switching pin.
Motor holding current switching pin.
Excitation mode switching pin 2.
Excitation mode switching pin 1.
CW / CCW switching signal input pin.
LV8712T
VCC
Equivalent Circuit
4 PS
Power save signal input pin.
GND
VCC
4
16 OUT2B
17 RNF2
18 OUT2A
20 OUT1B
21 RNF1
23 OUT1A
Channel 2 OUTB output pin.
Channel 2 current-sense resistor
connection pin.
Channel 2 OUTA output pin.
Channel 1 OUTB output pin.
Channel 1 current-sense resistor
connection pin.
Channel 1 OUTA output pin.Power
6 VREF
Constant current control reference
voltage input pin.
GND
VM
23 18
20 16
GND
VCC
21
17
6
GND
Continued on next page.
No.A1674-5/14
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LV8712T
(12) Typical current waveform in each excitation mode
2-phase excitation (CW mode)
STEP
MONI
(%)
100
l1 0
-100
(%)
100
I2 0
-100
1-2 phase excitation (CW mode)
STEP
MONI
(%)
100
I1 0
-100
(%)
100
I2 0
-100
No.A1674-11/14
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LV8712T.PDF ] | |
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