5.5-V 8-A H-bridge motor driver with ldo and current feedback
Product details
Parameters
Package | Pins | Size
Features
- 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
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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 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).
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | DRV8850 Low-Voltage H-Bridge IC With LDO Voltage Regulator datasheet (Rev. D) | Oct. 08, 2019 |
Application note | Advantages of Integrated Current Sensing (Rev. A) | Oct. 09, 2020 | |
Application note | Best Practices for Board Layout of Motor Drivers (Rev. A) | Jan. 22, 2019 | |
Technical articles | Why are you still driving automotive motors with relays? | Jul. 13, 2017 | |
Technical articles | The story of motor-drive integration | Jan. 09, 2017 | |
Technical articles | How to create a dynamic power solution for stepper motors, relays and LEDs | Nov. 01, 2016 | |
Technical articles | How to avoid motor and system overvoltage using AVS technology without external components | Oct. 14, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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 (...)
Features
- DRV8850 5A continuous/8A peak current supply
- MSP430 MCU onboard
Reference designs
Design files
-
download TIDA-01162 BOM.pdf (70KB) -
download TIDA-01162 Assembly Drawing.pdf (264KB) -
download TIDA-01162 PCB.pdf (1091KB) -
download TIDA-01162 CAD Files.zip (83319KB) -
download TIDA-01162 Gerber.zip (421KB)
Design files
-
download TIDA-00602 BOM.pdf (200KB) -
download TIDA-00602 Assembly Drawing.pdf (85KB) -
download TIDA-00602 PCB.pdf (536KB) -
download TIDA-00602 CAD Files.zip (518KB) -
download TIDA-00602 Gerber.zip (312KB)
Design files
-
download TIDA-00616 BOM.pdf (218KB) -
download TIDA-00616 Assembly Drawing.pdf (219KB) -
download TIDA-00616 PCB.pdf (84KB) -
download TIDA-00616 CAD Files.zip (1333KB) -
download TIDA-00616 Gerber.zip (345KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RGY) | 24 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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