DRV8834 Datasheet, PDF (1/30 Pages) Texas Instruments – DUAL BRIDGE STEPPER OR DC MOTOR DRIVER

DRV8834
www.ti.com
SLVSB19A – FEBRUARY 2012 – REVISED MARCH 2012
DUAL BRIDGE STEPPER OR DC MOTOR DRIVER
Check for Samples: DRV8834
FEATURES
1
•2 Dual-H-Bridge Current-Control Motor Driver
– Capable of Driving Two DC Motors or One
Stepper Motor
• Two Control Modes:
– Built-In Indexer Logic With Simple
STEP/DIRECTION Control and Up to
1/32-Step Microstepping
– PHASE/ENABLE Control, With the Ability to
Drive External References for > 1/32-Step
Microstepping
• Output Current 1.5-A Continuous, 2.2-A Peak
per H-Bridge (at V_M = 5 V, 25°C)
• Low R_DS(ON): 305-mΩ HS + LS
(at V_M = 5 V, 25°C)
• Wide Power Supply Voltage Range:
2.5 V – 10.8 V
• Dynamic t_BLANK and Mixed Decay Modes for
Smooth Microstepping
• PWM Winding Current Regulation and Limiting
• Thermally Enhanced Surface Mount Package
APPLICATIONS
• Battery-Powered Toys
• POS Printers
• Video Security Cameras
• Office Automation Machines
• Gaming Machines
• Robotics
DESCRIPTION
The DRV8834 provides a flexible motor driver solution for toys, printers, cameras, and other mechatronic
applications. The device has two H-bridge drivers, and is intended to drive a bipolar stepper motor or two DC
motors.
The output driver block of each H-bridge consists of N-channel power MOSFET’s configured as an H-bridge to
drive the motor windings. Each H-bridge includes circuitry to regulate or limit the winding current.
With proper PCB design, each H-bridge of the DRV8834 is capable of driving up to 1.5-A RMS (or DC)
continuously, at 25°C with a V_M supply of 5 V. It can support peak currents of up to 2.2 A per bridge. Current
capability is reduced slightly at lower V_M voltages.
Internal shutdown functions with a fault output pin are provided for over current protection, short circuit
protection, under voltage lockout and overtemperature. A low-power sleep mode is also provided.
The DRV8834 is packaged in a 24-pin HTSSOP or VQFN package with PowerPAD™ (Eco-friendly: RoHS & no
Sb/Br).
PACKAGE ⁽²⁾
PowerPAD™ (HTSSOP) - PWP
PowerPAD™ (VQFN) - RGE
ORDERING INFORMATION⁽¹⁾
ORDERABLE PART
NUMBER
Reel of 2000
DRV8834PWPR
Tube of 60
DRV8834PWP
Reel of 3000
DRV8834RGER
Reel of 250
DRV8834RGET
TOP-SIDE
MARKING
DRV8834
8834
(1) For the most current packaging and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated