1/2-H-Bridge Driver. DRV8844 Datasheet

DRV8844 Driver. Datasheet pdf. Equivalent

Part DRV8844
Description 1/2-H-Bridge Driver
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DRV8844
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DRV8844
SLVSBA2D – JULY 2012 – REVISED MAY 2016
DRV8844 Quad ½-H-Bridge Driver IC
1 Features
1 Quad 1/2-H-Bridge DC Motor Driver
– Can Drive Four Solenoids, Two DC Motors,
One Stepper Motor, or Other Loads
– Full Individual Half Bridge Control
– Low MOSFET On-Resistance
• 2.5-A Maximum Drive Current at 24 V, 25°C
• Floating Input Buffers Allow Dual (Bipolar)
Supplies (up to ±30 V)
• Built-In 3.3-V, 10-mA LDO Regulator
• Industry Standard IN/IN Digital Control Interface
• 8-V to 60-V Operating Supply Voltage Range
• Outputs Can Be Connected in Parallel
• Thermally Enhanced Surface Mount Package
2 Applications
• Textile Machines
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
The DRV8844 provides four individually controllable
1/2-H-bridge drivers. It can be used to drive two DC
motors, one stepper motor, four solenoids, or other
loads. The output driver channel for each channel
consists of N-channel power MOSFET’s configured in
a 1/2-H-bridge configuration.
The DRV8844 can supply up to 2.5-A peak or 1.75-A
RMS output current per channel (with proper PCB
heatsinking at 24 V and 25°C) per H-bridge.
Separate inputs to independently control each 1/2-H-
bridge are provided. To allow operation with split
supplies, the logic inputs and nFAULT output are
referenced to a separate floating ground pin.
Internal shutdown functions are provided for over
current protection, short circuit protection,
undervoltage lockout, and overtemperature.
The DRV8844 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)
DRV8844
HTSSOP (28)
9.70 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
8 to 60 V
Controller
8 EN / IN
SLEEP
FAULT
DRV8844
4 Half-H
Bridges
Protection
MOSFETs
2.5 A
BDC
2.5 A
BDC
M
+±
Copyright © 2016, Texas Instruments Incorporated
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.



DRV8844
DRV8844
SLVSBA2D – JULY 2012 – REVISED MAY 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 Switching Characteristics .......................................... 6
6.7 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 11
8 Application and Implementation ........................ 12
8.1 Application Information............................................ 12
8.2 Typical Application .................................................. 12
9 Power Supply Recommendations...................... 15
9.1 Bulk Capacitance .................................................... 15
10 Layout................................................................... 16
10.1 Layout Guidelines ................................................. 16
10.2 Layout Example .................................................... 16
10.3 Thermal Considerations ........................................ 16
10.4 Power Dissipation ................................................. 17
11 Device and Documentation Support ................. 18
11.1 Documentation Support ........................................ 18
11.2 Community Resources.......................................... 18
11.3 Trademarks ........................................................... 18
11.4 Electrostatic Discharge Caution ............................ 18
11.5 Glossary ................................................................ 18
12 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (May 2015) to Revision D
Page
• Added parallel output connection to the Features section .................................................................................................... 1
• Changed pins 6 and 9 from VNEG to SRC12 and SRC34 (respectively) in the Pin Configuration and Functions
section ................................................................................................................................................................................... 3
• Added SRC12, SRC34 to VNEG pins parameter to the Absolute Maximum Ratings table ................................................. 4
• Changed the Functional Block Diagram to show the change of pin 6 and 9 from VNEG to SRC12 and SRC34 ................ 8
• Added parallel output description and sense-resistor option to the Application Information section .................................. 12
Changes from Revision B (January 2015) to Revision C
Page
• Added ambient temperature to Recommended Operating Conditions .................................................................................. 4
Changes from Revision A (October 2012) to Revision B
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 ................................................................................................. 4
2
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