DRV8818 Datasheet, PDF (1/20 Pages) Texas Instruments – STEPPER MOTOR CONTROLLER IC

DRV8818
www.ti.com
SLVSAX9A – SEPTEMBER 2011 – REVISED FEBRUARY 2012
STEPPER MOTOR CONTROLLER IC
Check for Samples: DRV8818
FEATURES
1
•2 Pulse Width Modulation (PWM) Microstepping
Motor Driver
– Built-In Microstepping Indexer
– Up to 2.5-A Current Per Winding
– Microstepping Indexer Provides up to
1/8-Step Operation
– Low 0.37-Ω (HS + LS) MOSFET
On-Resistance (at 25°)
– Programmable Mixed Decay, Blanking, and
Off Time
• Pin-Compatible Upgrade to DRV8811 With
Lower R_ds(on)
• Thermally Enhanced Surface Mount Package
APPLICATIONS
• Printers
• Textile Machinery
• Positioning/Tracking
• Factory Automation
• Robotics
DESCRIPTION/ORDERING INFORMATION
The DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated
equipment applications. The device has two H-bridge drivers, as well as microstepping indexer logic to control a
stepper motor.
The output driver block for each consists of N-channel power MOSFETs configured as full H-bridges to drive the
motor windings.
A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the
motor in full-step, half-step, quarter-step, or eighth-step modes. Decay mode and PWM off time are
programmable.
Internal shutdown functions are provided for over current protection, short circuit protection, under-voltage
lockout and overtemperature.
The DRV8818 is packaged in a PowerPAD™ 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS
and no Sb/Br).
PACKAGE ⁽²⁾
PowerPAD™ (HTSSOP) – PWP
ORDERING INFORMATION⁽¹⁾
ORDERABLE PART NUMBER
Reel of 2000
DRV8818PWPR
Tube of 50
DRV8818PWP
TOP-SIDE MARKING
DRV8818
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated