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DRV8838 Single Brushed DC Motor Driver Carrier

Tiny breakout board for TI’s DRV8838 motor driver can deliver a continuous 1.7 A (1.8 A peak) to a single brushed DC motor. Operating voltage range from 0 V to 11 V, built-in protection against reverse-voltage, under-voltage, over-current, and over-temperature. Pololu 2990

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ID: 558106

3,25€ gross (23% VAT)
2,64€ net

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Data sheet

Output current1.7A
Number of channels1
Supply voltage min0 V
Supply voltages max11 V

More info

Description

This tiny breakout board for TI’s DRV8838 motor driver can deliver a continuous 1.7 A (1.8 A peak) to a single brushed DC motor. With an operating voltage range from 0 V to 11 V and built-in protection against reverse-voltage, under-voltage, over-current, and over-temperature, this driver is a great solution for powering a small, low-voltage motor. The carrier board has the form factor of a 10-pin DIP package, which makes it easy to use with standard solderless breadboards and 0.1″ perfboards.

Texas Instruments’ DRV8838 is a tiny H-bridge motor driver IC that can be used for bidirectional control of one brushed DC motor at 0 V to 11 V. It can supply up to about 1.7 A continuously and can tolerate peak currents up to 1.8 A for short durations, making it an ideal driver for small motors that run on low voltages. The DRV8838 is a great IC, but its small, leadless package makes it difficult for the typical student or hobbyist to use; our breakout board gives this driver the form factor of a 10-pin DIP package, which makes it easy to use with standard solderless breadboards and 0.1″ perfboards. Since this board is a carrier for the DRV8838, we recommend careful reading of the DRV8838 datasheet (1MB pdf). The board ships populated with SMD components, including the DRV8838, and adds a FET for reverse battery protection.

This motor driver is essentially a smaller, lower-cost, single-channel alternative to our DRV8835 dual motor driver carrier and DRV8833 dual motor driver carrier, which have very similar operating voltage ranges and current ratings but offer an additional motor channel.

PHASEENABLESLEEPOUT1OUT2operating mode
0PWM1PWMLforward/brake at speed PWM %
1PWM1LPWMreverse/brake at speed PWM %
x01LLbrake low (outputs shorted to ground)
xx0ZZcoast (outputs floating/disconnected)

Pinout

DRV8838 Single Brushed DC Motor Driver Carrier, labeled top view

PINDefault StateDescription
VIN Reverse-protected motor power supply input. While the driver can operate from a motor supply of 0 V to 11 V, the reverse-protection circuit will start negatively affecting performance below a few volts, and 1.5 V is the lower limit of where it can be used. Power can be supplied directly to VM to bypass the reverse-protection circuit.
VCC 1.8 V to 7 V logic power supply connection. Logic supply current draw is typically only a few milliamps at most, so in many applications this pin can optionally be dynamically powered by a microcontroller digital output.
VM This pin gives access to the motor power supply after the reverse-voltage protection MOSFET (see the board schematic below). It can be used to supply reverse-protected power to other components in the system. It is generally intended as an output, but it can also be used to supply board power (such as in cases where the motor supply voltage is too low for the reverse-protection circuit).
GND Ground connection points for the motor and logic power supplies. The control source and the motor driver must share a common ground.
OUT1 H-bridge output 1.
OUT2 H-bridge output 2.
PHASELOWDirection control input.
ENABLELOWSpeed control input; logic high causes the motor to drive.
SLEEPHIGHSleep/coast mode input; logic high results in normal operation.

Features

  • H-bridge motor driver: can drive one DC motor
  • Motor supply voltage: 0 V to 11 V
  • Logic supply voltage: 1.8 V to 7 V
  • Output current: up to 1.7 A continuous (1.8 A peak); operation at low motor and logic supply voltages reduces the maximum continuous output current
  • PHASE/ENABLE interface (one pin controls direction and another controls speed)
  • Inputs are 3V- and 5V-compatible
  • Under-voltage lockout on the logic supply and protection against over-current and over-temperature
  • Reverse-voltage protection on the motor supply
  • Compact size (0.5″×0.4″) with the form factor of a 10-pin DIP package

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