DRV8850

VQFN (RGY)

24

19 mm² 5.5 x 3.5

H-Bridge Motor Driver
- Drives a DC Motor, One Winding of a Stepper Motor, or Other Loads
- Low MOSFET On-Resistance: 65 mΩ HS + LS at 4.2V, 25°C
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 VQFN Package

H-Bridge Motor Driver
- Drives a DC Motor, One Winding of a Stepper Motor, or Other Loads
- Low MOSFET On-Resistance: 65 mΩ HS + LS at 4.2V, 25°C
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 VQFN Package

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 V 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 built-in current sensing for accurate current measurement.

The DRV8850 device is packaged in a 24-pin VQFN
(3.5-mm × 5.5-mm) package (Eco-friendly: RoHS and no Sb/Br).

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 V 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 built-in current sensing for accurate current measurement.

The DRV8850 device is packaged in a 24-pin VQFN
(3.5-mm × 5.5-mm) package (Eco-friendly: RoHS and no Sb/Br).

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Technical documentation

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	Type	Title	Date
*	Data sheet	DRV8850 Low-Voltage H-Bridge IC With LDO Voltage Regulator datasheet (Rev. D)	08 Oct 2019
	Application note	Best Practices for Board Layout of Motor Drivers (Rev. B)	14 Oct 2021
	Application note	Advantages of Integrated Current Sensing (Rev. A)	09 Oct 2020
	Technical article	Why are you still driving automotive motors with relays?	13 Jul 2017
	Technical article	The story of motor-drive integration	09 Jan 2017
	Technical article	How to create a dynamic power solution for stepper motors, relays and LEDs	01 Nov 2016
	Technical article	How to avoid motor and system overvoltage using AVS technology without external components	14 Oct 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DRV8850EVM — DRV8850EVM - Evaluation Module for Low-Voltage H-Bridge Motor Driver with LDO Voltage Regulator

The DRV8850 device provides a motor driver plus LDO voltage regulator solution for applications requiring a high start-up torque with superior thermal performance in mind. The device has one H-bridge driver to drive a DC motor, a voice-coil actuator, one winding of a stepper motor or other types of (...)

User guide

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Reference designs

TIDA-01162 — Integrated vs. Discrete Low Voltage Motor Drive Comparison Reference Design

TIDA-01162 demonstrates the key differences between an integrated vs. discrete low-voltage motor drive solution. The discrete solution is implemented using two large external MOSFETs, while the integrated solution utilizes TI’s DRV8850 brushed DC motor driver. Both designs are (...)

Schematic

Reference designs

TIDA-00602 — Electric Toothbrush Controller Reference Design

This reference design uses our low-voltage H-Bridge motor driver with an integrated low dropout (LDO) voltage regulator and an ultra-low-power microcontroller (MCU) to demonstrate a full implementation of a battery-powered electric toothbrush.

Schematic

Reference designs

TIDA-00616 — Energy Harvesting LaunchPad BoosterPack for Brushed DC Motor Control Reference Design

The Energy Harvesting LaunchPad for Brushed DC Motor Control is designed for charging a Li-ion or Li-polymer battery with solar energy, and subsequently using a voltage regulator to provide secondary system power to a TI LaunchPad and any peripherals connected the LaunchPad. The BoosterPack is (...)