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DRV8818_16 Datasheet, PDF (1/31 Pages) Texas Instruments – Stepper Motor Controller IC | |||
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DRV8818
SLVSAX9E â SEPTEMBER 2011 â REVISED JANUARY 2016
DRV8818 Stepper Motor Controller IC
1 Features
â¢1 Pulse Width Modulation (PWM) Microstepping
Motor Driver
â Built-In Microstepping Indexer
â Up to 8 Microsteps/Step
â Step and Direction Control
â Programmable Mixed Decay, Blanking, and Off
Time
⢠Up to 2.5-A Current Per Winding
⢠Low 0.37-Ω (HS + LS) MOSFET RDS(ON) (25°C)
⢠8-V to 35-V Operating Supply Voltage Range
⢠Pin to Pin Upgrade for DRV8811 With Lower
RDS(ON)
⢠Thermally-Enhanced Surface Mount Package
⢠Protection Features
â VM Undervoltage Lockout (UVLO)
â Overcurrent Protection (OCP)
â Thermal Shutdown (TSD)
2 Applications
⢠Printers
⢠Textile Machinery
⢠Positioning/Tracking
⢠Factory Automation
⢠Robotics
3 Description
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. The mode pins allow
for 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 28-pin HTSSOP
package with PowerPADâ¢.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8818
HTSSOP (28)
9.70 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
8 to 35 V
Controller
STEP
DIR
Step Size
DRV8818
Stepper
Motor Driver
2.5 A
HOMEn
M 2.5 A
Protection
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.
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