NCV70514 Datasheet, PDF (1/31 Pages) ON Semiconductor – Micro-stepping Motor Driver

NCV70514
Micro-stepping Motor Driver
Description
The NCV70514 is a micro−stepping stepper motor driver for bipolar
stepper motors. The chip is connected through I/O pins and an SPI
interface with an external microcontroller. The NCV70514 contains
a current−translation table and takes the next micro−step depending on
the clock signal on the “NXT” input pin and the status of the “DIR”
(= direction) register or input pin. The chip provides an error message
if stall, an electrical error, an under−voltage or an elevated junction
temperature is detected. It is using a proprietary PWM algorithm
for reliable current control.
NCV70514 is fully compatible with the automotive voltage
requirements and is ideally suited for general−purpose stepper motor
applications in the automotive, industrial, medical, and marine
environment.
Due to the technology, the device is especially suited for use
in applications with fluctuating battery supplies.
www.onsemi.com
1 32
QFN32, 5x5
CASE 488AM
MARKING
DIAGRAM
1
N70514−3
AWLYYWW
G
Features
• Dual H−bridge for 2−phase Stepper Motors
• Programmable Peak−current up to 800 mA
• On−chip Current Translator
N70514 = Specific Device Code
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
G
= Pb−Free Package
• SPI Interface with Daisy Chain Capability
• 7 Step Modes from Full−step up to 32 Micro−steps
• Fully Integrated Current−sensing and Current−regulation
• On Chip Stall Detection
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 30 of this data sheet.
• PWM Current Control with Automatic Selection of Fast and Slow
Decay
• Fixed PWM Frequency
• Active Fly−back Diodes
• Full Output Protection and Diagnosis
• Thermal Warning and Shutdown
• Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs, 5 V
Tolerant Open Drain Outputs
• Reset Function
• Overcurrent Protection
• Enhanced Under Voltage Management
• Step Mode Selection Inputs
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
Typical Applications
• Small Positioning Applications
• Automotive (headlamp alignment, HVAC, idle control, cruise control)
• Industrial Equipment (lighting, fluid control, labeling, process control, XYZ tables, robots)
• Building Automation (HVAC, surveillance, satellite dish, renewable energy systems)
© Semiconductor Components Industries, LLC, 2015
1
September, 2015 − Rev. 2
Publication Order Number:
NCV70514/D