The DRV8871 device is a brushed-DC motor driver for printers, appliances, industrial equipment, and other small machines. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that can control motors bidirectionally with up to 3.6-A peak current. The inputs can be pulse-width modulated (PWM) to control motor speed, using a choice of current-decay modes. Setting both inputs low enters a low-power sleep mode.
The DRV8871 device has advanced current-regulation circuitry that does not use an analog voltage reference or external sense resistor. This novel solution uses a standard low-cost, low-power resistor to set the current threshold. The ability to limit current to a known level can significantly reduce the system power requirements and bulk capacitance needed to maintain stable voltage, especially for motor startup and stall conditions.
The device is fully protected from faults and short circuits, including undervoltage (UVLO), overcurrent (OCP), and overtemperature (TSD). When the fault condition is removed, the device automatically resumes normal operation.For all available packages, see the orderable addendum at the end of the data sheet.
All trademarks are the property of their respective owners.
|Vs (Min) (V)|
|Vs (Max) (V)|
|RMS Output Current (A)|
|Peak Output Current (A)|
|Number of Full Bridges|
|RDS(ON) (HS + LS) (mOhms)|
|Number of Half Bridges|
|Operating Temperature Range (C)|
|Integrated Current Sensing||Current Sense Amplifier||Current Sense Amplifier||Current Regulation||Current Regulation|
|-40 to 125||-40 to 85||-40 to 125||-40 to 125||-40 to 125|
|8SO PowerPAD|| 16HTSSOP |
|16WQFN||8SO PowerPAD||8SO PowerPAD|
|Order Now||Order Now||Order Now||Order Now||Order Now|
|Automotive||DRV8871-Q1||Q100 devices qualified for high-reliability automotive applications targeting zero defects|