Overview
The DRV8871-Q1 device, produced by Texas Instruments, is a brushed-DC motor driver designed for various applications including printers, appliances, industrial equipment, and other small machines. This device is an H-bridge motor driver that can control motors bidirectionally with up to 3.6-A peak current. It features two logic inputs that can be pulse-width modulated (PWM) to control motor speed and includes advanced current-regulation circuitry without the need for an analog voltage reference or external sense resistor. The DRV8871-Q1 is qualified for automotive applications and meets AEC-Q100 standards, ensuring robust performance in a wide range of operating conditions.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| VM Operating Voltage | 6.8 | - | 45 | V |
| Logic Input Voltage (IN1, IN2) | 0 | - | 5.5 | V |
| PWM Frequency (IN1, IN2) | 0 | - | 200 kHz | kHz |
| Peak Output Current | 0 | - | 3.6 A | A |
| Operating Ambient Temperature | -40°C | - | 125°C | °C |
| RDS(on) (HS + LS) | - | 565 mΩ | - | mΩ |
| Package Type | - | HSOP (8-pin) | - | - |
| Package Size | - | 4.9 × 6 mm | - | - |
Key Features
- Qualified for automotive applications and AEC-Q100 certified with a temperature grade 1: –40°C to +125°C ambient operating temperature range.
- H-Bridge motor driver capable of driving one DC motor, one winding of a stepper motor, or other loads.
- Wide operating voltage range of 6.8-V to 45-V and 3.6-A peak current drive.
- PWM control interface for motor speed control with various current-decay modes.
- Current regulation without an analog voltage reference or external sense resistor, using a standard low-cost, low-power resistor to set the current threshold.
- Low-power sleep mode when both inputs are low.
- Integrated protection features including VM undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (TSD), and automatic fault recovery.
- Small package and footprint with an 8-pin HSOP and PowerPAD™.
Applications
- Automotive infotainment systems
- HUD projector adjustment
- Motorized shifter knobs
- On-board chargers
- Printers and appliances
- Industrial equipment and other small machines.
Q & A
- What is the DRV8871-Q1 device used for?
The DRV8871-Q1 is a brushed-DC motor driver used for controlling motors in various applications such as printers, appliances, industrial equipment, and automotive systems.
- What is the operating voltage range of the DRV8871-Q1?
The operating voltage range is from 6.8 V to 45 V.
- What is the peak current drive capability of the DRV8871-Q1?
The DRV8871-Q1 can drive up to 3.6 A peak current.
- How does the DRV8871-Q1 regulate current?
The device regulates current using a standard low-cost, low-power resistor attached to the ILIM pin, without needing an analog voltage reference or external sense resistor.
- What protection features are integrated into the DRV8871-Q1?
The device includes VM undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (TSD), and automatic fault recovery.
- What is the package type and size of the DRV8871-Q1?
The device is packaged in an 8-pin HSOP with a size of 4.9 × 6 mm.
- Can the DRV8871-Q1 be used in automotive applications?
Yes, the DRV8871-Q1 is qualified for automotive applications and meets AEC-Q100 standards.
- How does the DRV8871-Q1 enter sleep mode?
The device enters sleep mode when both inputs (IN1 and IN2) are low for a specified time (typically 1 ms).
- What is the thermal operating range of the DRV8871-Q1?
The device operates within an ambient temperature range of –40°C to +125°C.
- Can the inputs of the DRV8871-Q1 be PWM controlled?
Yes, the inputs can be pulse-width modulated (PWM) to control motor speed.
