LV8731V-TLM-H Datasheet, PDF (7/26 Pages) ON Semiconductor – PWM Constant-Current Control Stepper Motor Driver

LV8731V
Pin Functions
Pin No. Pin Name
6
ATT2
7
ATT1
10 EMM
13 RST/BLK
14 STEP/DC22
15 FR/DC21
16 MD2/DC12
17 MD1/DC11
18 DM
19 OE
20 ST
Pin Function
Motor holding current switching pin.
Motor holding current switching pin.
Output short-circuit protection mode
switching pin.
RESET input pin (STM) / Blanking time
switching pin (DCM).
STEP signal input pin (STM) / Channel 2
output control input pin 2 (DCM).
CW / CCW signal input pin (STM) /
Channel 2 output control input pin 1
(DCM).
Excitation mode switching pin 2 (STM) /
Channel 1 output control input pin 2
(DCM).
Excitation mode switching pin 1 (STM) /
Channel 1 output control input pin 1
(DCM).
Drive mode (STM/DCM) switching pin.
Output enable signal input pin.
Chip enable pin.
VREG5
GND
VREG5
Equivalent Circuit
10kΩ
100kΩ
23, 24
25, 42
28, 29
OUT2B
PGND
VM2
30, 31 RF2
32, 33
34, 35
36, 37
OUT2A
OUT1B
RF1
38, 39 VM1
43, 44 OUT1A
Channel 2 OUTB output pin.
Power system ground.
Channel 2 motor power supply
connection 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 motor power supply pin.
Channel 1 OUTA output pin.
GND
20kΩ
10kΩ
80kΩ
38 39
28 29
GND
43 44
32 33
34 35
23 24
10kΩ
25 42
36 37
30 31
500Ω
500Ω
Continued on next page.
No.A1482-7/26