H-Bridge Driver. DRV8843 Datasheet

DRV8843 Driver. Datasheet pdf. Equivalent

Part DRV8843
Description Dual H-Bridge Driver
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DRV8843
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Sample &
Buy
Technical
Documents
Tools &
Software
Support &
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DRV8843
SLVSAS8D – APRIL 2011 – REVISED NOVEMBER 2015
DRV8843 Dual H-Bridge Driver
1 Features
1 Dual H-Bridge Motor Driver
– Single/Dual Brushed DC
– Stepper
• IN/IN Control Interface
• Optional Fixed Frequency Current Regulation
– Two Bit Current control Allows Up to Four
Current Levels
• Low MOSFET On-Resistance
– 2.5-A Maximum Drive Current at 24 V
and TA = 25°C
– Combined 400 mΩ RDS(ON) of High-Side and
Low-Side at 24 V and TA = 25°C
• 8.2-V to 45-V Operating Supply Voltage Range
• Low Current Sleep Mode
• Built-In 3.3-V Reference Output
• Thermally Enhanced Surface Mount Package
• Protection Features
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– Undervoltage Lockout (UVLO)
– Fault Condition Indication Pin (nFAULT)
3 Description
The DRV8843 provides an integrated dual H-bridge
motor driver solution for printers, scanners, and other
automated equipment applications. The device can
be used to drive one or two brushed DC motors, a
bipolar stepper motor, or other loads. A simple PWM
interface allows easy interfacing to controller circuits.
The output driver block consists of N-channel power
MOSFETs configured as H-bridges. The DRV8843 an
supply up to 2.5-A peak or 1.75-A RMS output
current (with proper heat sinking at 24 V and
TA = 25°C) per H-bridge.
A low-power sleep mode is provided which shuts
down internal circuitry to achieve very low quiescent
current draw. This sleep mode can be set using a
dedicated nSLEEP pin.
Internal protection features are provided for
overtemperature, overcurrent, and undervoltage.
Fault conditions are indicated by a nFAULT pin.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8843
HTSSOP (28)
9.70 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
2 Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
Simplified Schematic
8.2 to 45 V
Controller
PWM DRV8843
Decay Mode
Current Level
nFAULT
Dual
H-Bridge
Motor Driver
Protection
2.5 A
2.5 A
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.



DRV8843
DRV8843
SLVSAS8D – APRIL 2011 – REVISED NOVEMBER 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......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
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 ......................................... 8
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Application .................................................. 14
9 Power Supply Recommendations...................... 17
9.1 Bulk Capacitance .................................................... 17
9.2 Power Supply and Logic Sequencing ..................... 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
Changes from Revision C (August 2013) to Revision D
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes section, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section................................................................ 3
2
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