Motor Driver. DRV8842-EP Datasheet

DRV8842-EP Driver. Datasheet pdf. Equivalent

Part DRV8842-EP
Description DC Motor Driver
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DRV8842-EP
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DRV8842-EP DC Motor Driver IC
DRV8842-EP
SLVSCH4 – JULY 2014
1 Features
1 Single H-Bridge Current-Control Motor Driver
– Drives One DC Motor, One Coil of a Stepper
Motor, or Other Actuators
– Five-Bit Winding Current Control Allows Up to
32 Current Levels
– Low MOSFET On-Resistance
• 5-A Maximum Drive Current at 24 V, 25°C
• Built-In 3.3-V Reference Output
• Industry-Standard PWM Control Interface
• 8.2-V to 45-V Operating Supply Voltage Range
• Thermally Enhanced Surface Mount Package
• Supports Defense, Aerospace, and Medical
Applications
– Controlled Baseline
– One Assembly and Test Site
– One Fabrication Site
– Available in Military (–55°C to 125°C)
Temperature Range
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability
2 Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
The DRV8842-EP 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, one
coil of a stepper motor, or other loads. The output
driver block consists of N-channel power MOSFETs
configured as an H-bridge. The DRV8842-EP can
supply up to 5-A peak or 3.5-A RMS output current
(with proper heatsinking at 24 V and 25°C).
Separate inputs to independently control each half of
the H-bridge are provided.
Internal shutdown functions are provided for
overcurrent protection, short circuit protection,
undervoltage lockout, and over-temperature.
The DRV8842-EP is available in a 28-pin HTSSOP
package with PowerPAD™ (Eco-friendly: RoHS & no
Sb/Br).
Device Information(1)
ORDER NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8842MPWPREP HTSSOP (28)
9.70 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
8.2 to 45 V
IN1 DRV8842-EP
IN2
VREF
Stepper
5A
M
Current %
Motor Driver
nFAULT
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.



DRV8842-EP
DRV8842-EP
SLVSCH4 – JULY 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 Handling Ratings....................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Motor Driver Timing Requirements ........................... 6
7.7 Typical Characteristics .............................................. 7
8 Detailed Description .............................................. 8
8.1 Overview ................................................................... 8
8.2 Functional Block Diagram ......................................... 8
8.3 Feature Description................................................... 9
8.4 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Application .................................................. 13
10 Power Supply Recommendations ..................... 16
10.1 Bulk Capacitance .................................................. 16
10.2 Power Supply and Logic Sequencing .................. 16
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 17
12 Device and Documentation Support ................. 18
12.1 Trademarks ........................................................... 18
12.2 Electrostatic Discharge Caution ............................ 18
12.3 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 18
5 Revision History
DATE
July 2014
VERSION
*
NOTES
Initial Release
2
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