DRV8841_15 Datasheet, PDF (1/28 Pages) Texas Instruments – Dual H-Bridge Driver IC

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DRV8841
SLVSAC0F – MAY 2010 – REVISED DECEMBER 2015
DRV8841 Dual H-Bridge Driver IC
1 Features
•1 Dual H-Bridge DC Motor Driver
– Single and Dual Brushed DC
– Stepper
• PWM 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
T_A = 25°C
– Combined 400 mΩ R_DS(ON) of High-Side and
Low-Side at 24 V and T_A = 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)
2 Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
The DRV8841 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 DRV8841 an
supply up to 2.5-A peak or 1.75-A RMS output
current (with proper heat sinking at 24 V and
T_A = 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)
DRV8841
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
8.2 to 45 V
Controller
PWM
Decay Mode
Current Level
DRV8841
Dual
H-Bridge Motor
Driver
2.5 A
nFAULT
Protection
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.