LV8774Q Datasheet, PDF (1/28 Pages) ON Semiconductor – PWM Constant-Current Control Stepping Motor Driver

LV8774Q
Bi-CDMOS LSI
PWM Constant-Current Control
Stepper Motor Driver
www.onsemi.com
Overview
The LV8774 is a 2-channel H-bridge driver IC, and can drive a stepper
motor or two brushed DC motors.
A stepper motor driver supports micro-step drive with 1/16-step resolution,
and two brushed motor drivers support forward, reverse, brake, and
standby functions. It is ideally suited for driving brushed DC motors and
stepper motors used in office equipment and amusement applications.
Feature
 Single-channel PWM current control stepper motor driver
VQFN44L ( 6x6 )
(or two DC motor driver)
 BiCDMOS process IC
 Low on resistance (upper side : 0.3 ; lower side : 0.25 ;total of upper and lower : 0.55 ; Ta = 25C, IO = 2A)
 Micro-step mode can be set to Full-step, Half-step, Quarter-step , or 1/16-step
 Excitation step proceeds only by step signal input with stepper motor
 Motor current selectable in four steps
 Output short-circuit protection circuit (selectable from latch-type or auto-reset-type)
 Unusual condition warning output pins
 No control power supply required
Typical Applications
 Stepper/Brush DC Motors , Computing & Peripherals , Industrial
 Printers , Document Scanner , PoE Security Camera , Slot Machine , Vending Machine ,etc
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
VM max
VM , VM1 , VM2
36
V
Output peak current
Output current
Logic input voltage
IO peak
IO max
VIN
Tw  10ms , duty 20% , Per 1ch
Per 1ch
ATT1, ATT2, EMM, RST/BLK, STEP/DC22,
FR/DC21, MD2/DC12, MD1/DC11, DM, OE, ST
2.5
A
2
A
-0.3 to +6
V
MONI/EMO input voltage
Vmoni/Vemo
-0.3 to +6
V
Allowable power dissipation
Pd max
*
3.60
W
Operating temperature
Topr
-20 to +85
C
Storage temperature
Tstg
-55 to +150
C
*Specified circuit board : 57.0mmx57.0mmx1.6mm, glass epoxy 4-layer board, with backside mounting.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
ORDERING INFORMATION
See detailed ordering and shipping information on page 28 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
June 2015 - Rev. 2
Publication Order Number :
LV8774Q/D