DRV8821_10 Datasheet, PDF (1/16 Pages) Texas Instruments – DUAL STEPPER MOTOR CONTROLLER/DRIVER

DRV8821
www.ti.com
SLVS912C – JANUARY 2009 – REVISED JANUARY 2010
DUAL STEPPER MOTOR CONTROLLER/DRIVER
Check for Samples: DRV8821
FEATURES
1
•2 Dual PWM microstepping motor driver
– Built-In Microstepping Indexers
– Up to 1.5-A Current Per Winding
– Three-Bit Winding Current Control Allows
up to Eight Current Levels
– Low MOSFET On-Resistance
– Selectable Slow or Mixed Decay Modes
• 8-V to 32-V Operating Supply Voltage Range
• Internal Charge Pump for Gate Drive
• Built-in 3.3-V Reference
• Simple Step/Direction Interface
• Fully Protected Against Undervoltage,
Overtemperature, and Overcurrent
• Thermally Enhanced Surface Mount Package
APPLICATIONS
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
DESCRIPTION/ORDERING INFORMATION
The DRV8821 provides a dual microstepping-capable stepper motor controller/driver solution for printers,
scanners, and other office automation equipment applications.
Two independent stepper motor driver circuits include four H-bridge drivers and microstepping-capable indexer
logic. Each of the motor driver blocks employ N-channel power MOSFETs configured as an H-bridge 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, and the selection of slow or mixed decay modes.
Internal shutdown functions are provided for over current protection, short circuit protection, under voltage
lockout and overtemperature.
The DRV8821 is packaged in a 48-pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).
T_A
–40°C to 85°C
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
PowerPad™ (HTSSOP) - DCA
Reel of 2000
Tube of 40
DRV8821DCAR
DRV8821DCA
TOP-SIDE MARKING
DRV8821
(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, PowerPAD are trademarks 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 © 2009–2010, Texas Instruments Incorporated