LV8714TA: Dual Stepper Motor Driver, Ultra-small Micro Steps

The LV8714TA is an extremely energy efficient dual stepper motor driver with operating voltage range from 4 V to 16.5 V. With low on resistance type power FETs, loss-less current sensing, synchronous rectification, and ultra-low standby current (<1µA), the device offers the best-in-class energy efficient system solution. Integrated regulators enable one-chip, single supply system solution. Built-in system protection functions such as over-current, thermal shutdown and low voltage shutdown enable a highly reliable system solution with smallest system solution footprint. Among wide variety of applications that the LV8714TA addresses are security camera systems, point of sale (PoS) terminals, document scanners and multi-function printers.

Features

Quad H-bridges with PWM based constant-current control
Power FETs with low on resistance (Upper: 0.6Ω, Lower: 0.3Ω, Total of upper and lower: 0.9Ω @ Ta=25°C, Io=1.5A)
Internal current sense mechanism without external power resistors
On-chip regulators for logic circuits and power FETs biasing
Power saving mode with ultra-low standby current (< 1µA) when idle
Built-in system protection functions such as thermal shutdown, low-voltage shutdown and over-current protection
Full, Half, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256 and over microstep drive is realizable by controlling VREF voltage

Benefits

One-chip solution that drives dual stepper or quad DC motors
Minimizes power loss while in operation
Loss-less current sensing that enhances energy efficiency
Single supply operation without external component
Enhances energy efficiency of the system solution
Reliable system solution under harsh operating conditions
High convenience by abundant excitation mode, and low vibration by high resolution

Applications

Industrial
Computing & Peripherals

End Products

Surveillance Camera
Stagelight
Scanner
POS and Multi-purpose Printers

Software (1)

Document Title	Document ID/Size	Revision	Revision Date
LV8714TAGEVK Software	LV8714TAGEVK_SOFTWARE.zip (1393kB)	0

Package Drawings (1)

Document Title	Document ID/Size	Revision
QFP / 48 LEADS, TQFP EP 7x7x1 mm	932F-01 (63.7kB)	C

Evaluation Board Documents (4)

Document Title	Document ID/Size	Revision	Revision Date
LV8714TAGEVK Bill of Materials ROHS Compliant	LV8714TAGEVK_BOM_ROHS.pdf (91kB)	0
LV8714TAGEVK Gerber Layout Files (Zip Format)	LV8714TAGEVK_GERBER.zip (329kB)	0
LV8714TAGEVK Instruction Manual	LV8714TAGEVK_INSTRUCTION_MANUAL (809kB)	0
LV8714TAGEVK Schematic	LV8714TAGEVK_SCHEMATIC.pdf (51kB)	0