Product description: DRV8876 QFN - single-channel driver for 37 V / 1.1 A motors - Pololu 4037
DC motor driver manufactured by Pololu. Single-channel, equipped with the DRV8876 QFN system, it is supplied with the voltage from 4.5 V to 37 V. The continuous current per channel is 1.1 A (temporary up to 3.5 A for 1 second). The module allows you to control the speed and direction of rotation of one motor, using only two pins of the microcontroller. The controller is also equipped with protection against reverse polarity, too low voltage, too high current and too high temperature. The set includes goldpin connectors, intended for self-soldering.
![Connecting the DRV8876 QFN driver.](https://cdn1.botland.store/img/art/inne/21361_7b.jpg)
Connecting the DRV8876 QFN driver
The motor supply voltage in the range from 4.5 V to 37 V should be connected to the VIN or VM pin. In a typical application, it is enough to connect two control lines: the selection of the PHASE rotation direction and the PWM speed regulation to the ENABLE pin. By default, the controller is in sleep mode - to exit it, you need to supply the SLEEP pin with a voltage in the range from 1.8 V to 5.5 V. DRV8876 QFN offers three possible control modes:
- PHASE / ENABLE (PH / EH)
- PWM (IN / IN)
- Via an independent half-bridge
Pins of the DRV8876 QFN driver | ||
---|---|---|
Pin | Default state | Description |
VIN | Input voltage from 4.5 V to 37 V. | |
GND | The mass of the system for the engine and logic. | |
VM | Pin that gives access to the motor's power supply after activation of the MOSFET protection against reverse voltage. It can be used to power other system components with reverse polarity protection. | |
OUT1 | Motor 1 output. | |
OUT2 | 2nd engine output. | |
EN / IN1 | LOW | Pin 1 for motor turn ON / OFF PHASE / ENABLE (PH / EH). |
PH / IN2 | LOW | Pin 2 to control the direction of rotation of the motor PHASE / ENABLE (PH / EH). |
FAULT | FLOATING | Open-drain, fault output activated with low state. The pin goes low after exceeding the permissible current or voltage. It needs to be pulled up with a resistor to be high by default. |
SLEEP | LOW | The SLEEP input causes the controller to enter the low power state after entering the low state. This pin can also be switched to clear a stuck over current or over temperature fault. |
VREF | Current-limiting threshold reference voltage. |
DRV8876 QFN motor driver specification
- Number of channels: 1
- Supply voltage: 4.5 V to 37 V
- Continuous current per channel: 1.1 A
- Instantaneous current per channel: 3.5 A
- Maximum PWM frequency: 100 kHz
- Minimum logic voltage: 1.8V
- Maximum logic voltage: 5.5V
- Reverse polarity protection
- Dimensions: 15.2 x 17.8 mm
- Weight: 0.9 g