DRV8850 Datasheet, PDF (1/22 Pages) Texas Instruments – Low-Voltage H-Bridge IC With LDO Voltage Regulator

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DRV8850
SLVSCC0A – NOVEMBER 2013 – REVISED JANUARY 2014
Low-Voltage H-Bridge IC With LDO Voltage Regulator
FEATURES
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•2 H-Bridge Motor Driver
– Drives a DC Motor, One Winding of a
Stepper Motor, or Other Loads
– Low MOSFET On-Resistance: 45 mΩ per
FET
• 5-A Continuous 8-A Peak-Drive Current
• Internal Current Sensing With Current Sense
Output
• 2 to 5.5-V Operating Supply Voltage Range
• Overvoltage and Undervoltage Lockout
• Low-Power Sleep Mode
• 100-mA Isolated Low-Dropout (LDO) Voltage
Regulator
• 24-Pin QFN Package
• 24-Pin HTSSOP Package
APPLICATIONS
• Battery-Operated Applications With High
Startup Torque, such as:
– Personal Hygiene (Electric Toothbrushes,
Shavers)
– Toys
– RC Helicopters and Cars
– Robotics
DESCRIPTION
The DRV8850 device provides a motor driver plus
LDO voltage regulator solution for consumer
products, toys, and other low-voltage or battery-
powered motion-control applications. The device has
one H-bridge driver to drive a DC motor, a voice-coil
actuator, one winding of a stepper motor, a solenoid,
or other devices. The output driver block consists of
N-channel power MOSFETs configured as an H-
bridge to drive the load. An internal charge pump
generates the needed gate-drive voltages.
The DRV8850 device supplies up to 5 A of
continuous output current (with proper PCB heat
sinking) and up to 8-A peak current. It operates on a
supply voltage from 2.0 to 5.5 V.
A low-dropout linear voltage regulator is integrated
with the motor driver to supply power to
microcontrollers or other circuits. The LDO voltage
regulator can be active in device sleep mode, so that
the driver may be shut down without removing power
to any devices powered by the LDO voltage
regulator.
Internal shutdown functions provide overcurrent,
short-circuit, undervoltage, overvoltage, and
overtemperature protection. In addition, the device
also has a built-in current sensing for accurate
current measurement.
The DRV8850 device is packaged in a 24-pin
HTSSOP (7.7 mm × 4.4 mm) or QFN (3.5-mm × 5.5-
mm) package with PowerPAD™ (Eco-friendly: RoHS
and no Sb/Br).
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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.
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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 © 2013–2014, Texas Instruments Incorporated