DRV8811_15 Datasheet, PDF (1/32 Pages) Texas Instruments – DRV8811 Stepper Motor Controller IC

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DRV8811
SLVS865I – SEPTEMBER 2008 – REVISED JANUARY 2015
DRV8811 Stepper Motor Controller IC
1 Features
•1 Pulse Width Modulation (PWM) Microstepping
Motor Driver
– Built-In Microstepping Indexer
– Up to 1/8 Microstepping
– Step and Direction Control
– Programmable Mixed Decay, Blanking, and
Off-Time
• Up to 1.9-A Current Per Winding
• Low 1.0-Ω (HS+LS) MOSFET R_DS(ON) (25°C)
• 8-V to 38-V Operating Supply Voltage Range
• Pin to Pin with the DRV8818
• Thermally Enhanced Surface Mount Package
• Protection Features:
– VM Undervoltage Lockout (UVLO)
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– Fault Condition Indication Pin (nFAULT)
2 Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
The DRV8811 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 consists of N-channel power
MOSFETs configured as full H-bridges to drive the
motor windings.
A simple STEP/DIR interface allows easy interfacing
to controller circuits. Step 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 DRV8811 is packaged in a PowerPAD™ 28-pin
HTSSOP package with thermal pad (Eco-friendly:
RoHS and no Sb/Br).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8811
HTSSOP (28)
9.70 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
8 to 38 V
Controller
STEP
DIR
Step Size
DRV8811
1.9 A
Stepper
Motor Driver
HOMEn
M ^{1.9 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.