Description
The DRV8837 provides an integrated motor-driver solution for cameras, consumer products, toys, and other low-voltage or battery-powered motion-control applications. The device has one H-bridge driver, and can drive one dc motor or one winding of a stepper motor, as well as other devices like solenoids. The output driver block consists of N-channel power MOSFETs configured as an H-bridge to drive the motor winding. An internal charge pump generates needed gate-drive voltages.
The DRV8837 can supply up to 1.8 A of output current. It operates on a motor power-supply voltage from 1.8 V to 11 V, and a device power-supply voltage of 1.8 V to 7 V.
The DRV8837 has a PWM (IN/IN) input interface, which is compatible with industry-standard devices.
There are internal shutdown functions for overcurrent protection, short-circuit protection, undervoltage lockout and overtemperature.
The DRV8837 package is an 8-pin 2-mm × 2-mm WSON PowerPAD package.
Features
- H-Bridge Motor Driver
- Drives a DC Motor or One Winding of a Stepper Motor or Other Loads
- Low MOSFET On-Resistance: HS + LS 280 mΩ
- 1.8-A Maximum Drive Current
- 1.8-V to 11-V Motor-Operating Supply-Voltage Range
- Separate Motor and Logic Supply Pins
- PWM (IN/IN) Interface
- Low-Power Sleep Mode With 120-nA Maximum Combined Supply Current
- Dedicated SLEEP Pin
- 2-mm × 2-mm 8-Pin WSON Package
Texas Instruments has introduced an 1.8A brushed DC motor driver in a small 2mm x 2mm WSON package.
The DRV8837 has a low RDS(ON) of 280milliohms and draws a sleep-mode current of 35nA. Likely applications include gas or water smart meters, electronic locks, micro printers and cameras.
The device’s 1.8V to 11V operating range supports up to 6-stack alkaline or 2-stack Li-ion battery pack applications.
There is an evaluation module is available which has on-board speed, sleep and direction controls and a Micro-USB connection for evaluation/power-up.
An MSP430 microcontroller is used to evaluate DRV8837 performance with the added flexibility to use an external MCU.
DRV8x motor drivers integrate many of the functional blocks needed in a motor system, such as gate drive circuitry, , protection circuitry and current regulation circuitry.
Texas Instruments has introduced an 1.8A brushed DC motor driver in a small 2mm x 2mm WSON package.
The DRV8837 has a low RDS(ON) of 280milliohms and draws a sleep-mode current of 35nA. Likely applications include gas or water smart meters, electronic locks, micro printers and cameras.
The device’s 1.8V to 11V operating range supports up to 6-stack alkaline or 2-stack Li-ion battery pack applications.
There is an evaluation module is available which has on-board speed, sleep and direction controls and a Micro-USB connection for evaluation/power-up.
An MSP430 microcontroller is used to evaluate DRV8837 performance with the added flexibility to use an external MCU.
DRV8x motor drivers integrate many of the functional blocks needed in a motor system, such as gate drive circuitry, , protection circuitry and current regulation circuitry.
For more read: TI puts 1.8A brushed DC motor driver in 2mm package
