DRV8840_15 Datasheet, PDF (8/28 Pages) Texas Instruments – DC Motor Driver IC

DRV8840
SLVSAB7D – MAY 2010 – REVISED DECEMBER 2015
7 Detailed Description
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7.1 Overview
The DRV8840 is an integrated motor driver solution for printers, scanners, and other automated equipment
applications. The device integrates a single NMOS H-bridge, charge pump, current sense, current regulation, and
device protection circuitry. The DRV8828 can be powered from a single voltage supply from 8.2 V to 45 V, and is
capable of providing a continuous output current up to 5 A.
A simple PHASE/ENBL interface allows for easy interfacing to an external controller. A 5 bit current control
scheme allows for up to 32 discrete current levels. The current regulation method is adjustable between slow and
fast decay.
Integrated protection circuits allows the device to monitor and protect against overcurrent, undervoltage, and
overtemperature faults which are all reported through a fault indication pin (nFAULT). A low power sleep mode is
integrated which allows the system to lower power consumption when not driving the motor.
8
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