Overview
The DRV8806PWPR, produced by Texas Instruments, is a quad serial interface low-side driver IC designed for driving various types of loads such as unipolar stepper motors, DC motors, relays, and solenoids. This device features integrated protection mechanisms and a serial interface for control and fault status monitoring. It is packaged in a 16-pin HTSSOP (PWP) package, which is eco-friendly and compliant with RoHS standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage Range | 8.2 to 40 | V |
| Maximum Drive Current per Channel (Single Channel On) | 2 | A |
| Maximum Drive Current per Channel (All Channels On) | 1 | A |
| Typical RDS(ON) of NMOS FETs | 500 | mΩ |
| Package Type | HTSSOP (16 pins) | - |
| Package Size | 5.00 mm × 4.40 mm | - |
| Junction-to-Ambient Thermal Resistance | 39.6 | °C/W |
Key Features
- Four protected low-side drivers with overcurrent protection and integrated inductive clamp diodes.
- Serial interface for controlling output drivers and reading fault status.
- Open/shorted load detection and fault indication via the nFAULT pin.
- Internal shutdown functions for overcurrent, short-circuit, undervoltage lockout, and overtemperature protection.
- Daisy-chain capability to control multiple devices with a single serial interface.
- Thermally-enhanced surface mount package.
Applications
- Unipolar stepper motor drivers.
- DC motor drivers.
- Relay drivers.
- Solenoid drivers.
- General low-side switch applications.
Q & A
- What is the operating supply voltage range of the DRV8806PWPR?
The operating supply voltage range is from 8.2 V to 40 V.
- What is the maximum drive current per channel for the DRV8806PWPR?
The maximum drive current per channel is 2 A when a single channel is on and 1 A when all channels are on.
- What type of protection mechanisms are integrated into the DRV8806PWPR?
The device includes overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature protection.
- How does the serial interface work on the DRV8806PWPR?
Data is shifted into the device through the SDATIN pin at each rising edge of the SCLK pin while LATCH is low. Multiple devices can be daisy-chained together using a single serial interface.
- What is the purpose of the nFAULT pin on the DRV8806PWPR?
The nFAULT pin indicates fault conditions such as overtemperature, overcurrent, or open load.
- What is the typical RDS(ON) of the NMOS FETs in the DRV8806PWPR?
The typical RDS(ON) of the NMOS FETs is 500 mΩ.
- What package type and size does the DRV8806PWPR come in?
The device is packaged in a 16-pin HTSSOP package with dimensions of 5.00 mm × 4.40 mm.
- How does the thermal shutdown feature work on the DRV8806PWPR?
If the die temperature exceeds safe limits (approximately 150°C), all output FETs will be disabled until the temperature drops to a safe level.
- What are some common applications for the DRV8806PWPR?
Common applications include driving unipolar stepper motors, DC motors, relays, and solenoids, as well as general low-side switch applications.
- Can multiple DRV8806PWPR devices be controlled with a single serial interface?
Yes, multiple devices can be daisy-chained together to use a single serial interface.
