DRV8844_15 Datasheet, PDF (1/25 Pages) Texas Instruments – DRV8844 Quad ½-H-Bridge Driver IC

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
DRV8844
SLVSBA2C – JULY 2012 – REVISED MAY 2015
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
• 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, under
voltage 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 x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
Controller
8 _{EN / IN}
SLEEP
FAULT
8 to 60 V
DRV8844
4 Half-H
Bridges
Protection
MOSFETs
2.5 A
BDC
2.5 A
BDC
M
+±
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.