The DRV8871-Q1 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-Q1 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.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | DRV8871-Q1 3.6-A Brushed DC Motor Driver With Internal Current Sense (PWM Control) datasheet | PDF | HTML | 17 Mär 2017 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 30 Apr 2024 | |
| Application brief | Advantages of Integrated Current Sensing (Rev. B) | PDF | HTML | 20 Jun 2022 | |
| Application note | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 14 Okt 2021 | |
| Functional safety information | DRV8871-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 13 Mai 2021 | |
| Application note | Protecting Automotive Motor Drive Systems from Reverse Polarity Conditions (Rev. A) | 19 Feb 2019 | ||
| Application note | PowerPAD™ Thermally Enhanced Package (Rev. H) | 06 Jul 2018 | ||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 12 Mai 2004 |
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| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
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