Motor Driver. DRV8840 Datasheet

DRV8840 Driver. Datasheet pdf. Equivalent

Part DRV8840
Description DC Motor Driver
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DRV8840
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
DRV8840
SLVSAB7D – MAY 2010 – REVISED DECEMBER 2015
DRV8840 DC Motor Driver IC
1 Features
1 Single H-Bridge Current-Control Motor Driver
• 8.2-V to 45-V Operating Supply Voltage Range
• Five Bit Current Control Allows up to 32 Current
Levels
• Low MOSFET RDS(on) Typical 0.65 (HS + LS)
• 5-A Maximum Drive Current at 24 V, TA = 25°C
• Built-In 3.3-V Reference Output
• Parallel Digital Control Interface
• Thermal Enhanced Surface Mount Package
• Protection Features:
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– VM Undervoltage Lockout (UVLO)
– Fault Condition Indication Pin (nFAULT)
2 Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
The DRV8840 provides an integrated motor driver
solution for printers, scanners, and other automated
equipment applications. The device has one H-bridge
driver, and is intended to drive one DC motor. The
output driver block for each consists of N-channel
power MOSFETs configured as full H-bridges to drive
the motor windings. The DRV8840 can supply up to
5-A peak or 3.5-A output current (with proper
heatsinking at 24 V and 25°C).
A simple parallel digital control interface is compatible
with industry-standard devices. Decay mode is
programmable to allow braking or coasting of the
motor when disabled.
Internal shutdown functions are provided for
overcurrent protection, short-circuit protection,
undervoltage lockout, and overtemperature.
The DRV8840 is available in a 28-pin HTSSOP
package with PowerPAD™ (Eco-friendly: RoHS & no
Sb/Br).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8840
HTSSOP (28)
9.70 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
8.2 to 45 V
ENBL DRV8840
PHASE
+
Current Control H-Bridge
Decay Mode Motor Driver 5 A
-
nFAULT
Current
Control
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.



DRV8840
DRV8840
SLVSAB7D – MAY 2010 – REVISED DECEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Application ................................................. 14
9 Power Supply Recommendations...................... 17
9.1 Bulk Capacitance Sizing ......................................... 17
10 Layout................................................................... 18
10.1 Layout Guidelines ................................................. 18
10.2 Layout Example .................................................... 18
10.3 Thermal Considerations ........................................ 19
11 Device and Documentation Support ................. 20
11.1 Documentation Support ........................................ 20
11.2 Community Resources.......................................... 20
11.3 Trademarks ........................................................... 20
11.4 Electrostatic Discharge Caution ............................ 20
11.5 Glossary ................................................................ 20
12 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (August 2013) to Revision D
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
• Updated Features bullets ....................................................................................................................................................... 1
• Added MIN value for ISENSEx row from –0.3 V to –0.8 V ................................................................................................... 4
2
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