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IC MTR DRV BIPLR 3-5.5V 28HTSSOP
FEATURES
• 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 Rds(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).
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