DRV8821_16 Datasheet, PDF (1/32 Pages) Texas Instruments – Dual Stepper Motor Controller and Driver

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DRV8821
SLVS912J – JANUARY 2009 – REVISED JANUARY 2016
DRV8821 Dual Stepper Motor Controller and Driver
1 Features
•1 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
2 Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
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,
undervoltage lockout, and overtemperature.
The DRV8821 is packaged in a 48-pin HTSSOP
package (Eco-friendly : RoHS & no Sb/Br).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8821
HTSSOP (48)
6.10 mm x 12.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.