Motor Driver. DRV8842 Datasheet

DRV8842 Driver. Datasheet pdf. Equivalent

Part DRV8842
Description DC Motor Driver
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DRV8842
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DRV8842 DC Motor Driver IC
DRV8842
SLVSAB8G – MAY 2010 – REVISED MARCH 2016
1 Features
1 Single H-Bridge Current-Control Motor Driver
• 8.2-V to 45-V Operating Supply Voltage Range
• Five-Bit Winding Current Control Allows Up to 32
Current Levels
• Low MOSFET RDS(on) Typical 0.2 (HS + LS)
• 5-A Maximum Drive Current at 24 V, 25°C
• Built-In 3.3-V Reference Output
• Industry-Standard PWM Control Interface
• Thermally 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 DRV8842 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 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 overtemperature.
TheDRV8842 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)
DRV8842
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
IN1
DRV8842
IN2
+
Current Control
Decay Mode
H-Bridge
Motor Driver
5A
±
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.



DRV8842
DRV8842
SLVSAB8G – MAY 2010 – REVISED MARCH 2016
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........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 7
7.1 Overview ................................................................... 7
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 8
7.4 Device Functional Modes........................................ 12
8 Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Application ................................................. 13
9 Power Supply Recommendations...................... 16
9.1 Bulk Capacitance Sizing ......................................... 16
10 Layout................................................................... 17
10.1 Layout Guidelines ................................................. 17
10.2 Layout Example .................................................... 17
10.3 Thermal Considerations ........................................ 18
11 Device and Documentation Support ................. 19
11.1 Documentation Support ........................................ 19
11.2 Community Resources.......................................... 19
11.3 Trademarks ........................................................... 19
11.4 Electrostatic Discharge Caution ............................ 19
11.5 Glossary ................................................................ 19
12 Mechanical, Packaging, and Orderable
Information ........................................................... 19
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (December 2015) to Revision G
Page
• Changed the typical RDS(on) value from 0.65 Ω to 0.2 Ω in the Features section .................................................................. 1
• Changed ENBL and PHASE to IN1 and IN2 (respectively) in the Simplified Schematic, Functional Block Diagram,
Typical Application Schematic, and Example Layout images ............................................................................................... 1
Changes from Revision E (August 2013) to Revision F
Page
• Added 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
• Added Protection Features and related list items to Features ............................................................................................... 1
• Changed the MIN value for ISENSEx pin voltage row from –0.3 V to –0.8 V........................................................................ 4
2
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