Overview
The DRV8805PWP, produced by Texas Instruments, is a 4-channel protected low-side driver IC designed specifically for driving unipolar stepper motors. This device integrates an indexer and a simple step/direction interface, making it easy to control stepper motors in various applications. The DRV8805PWP is available in a 16-pin HTSSOP package and is known for its robust protection features and high current handling capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage Range | 8.2 to 60 | V |
| Maximum Drive Current per Channel (Single Channel On, HTSSOP package) | 2 | A |
| Maximum Drive Current per Channel (Four Channels On, HTSSOP package) | 1 | A |
| Typical RDS(on) of MOSFETs | 500 | mΩ |
| Package Type | 16-pin HTSSOP | - |
| Package Dimensions | 5.00 mm × 4.40 mm | - |
| Thermal Resistance (Junction-to-Ambient) | 39.6 | °C/W |
| Overcurrent Protection Trip Level | 2.3 to 3.8 | A |
| Overtemperature Shutdown | Yes | - |
Key Features
- Four protected low-side drivers with overcurrent protection and integrated inductive clamp diodes.
- Simple step/direction interface for controlling unipolar stepper motors.
- Three stepping modes supported: 2-phase full-step, 1-2 phase half-step, and 1-phase wave drive.
- Internal shutdown functions for overcurrent, short-circuit, under-voltage lockout, and overtemperature protection.
- Fault indication via the nFAULT pin.
- Thermally enhanced surface mount package (Eco-friendly: RoHS & no Sb/Br).
- Optional connection of VCLAMP to a Zener or TVS diode for fast current decay in loads.
Applications
- Gaming machines.
- General unipolar stepper motor drivers.
- Industrial automation and robotics where precise motor control is required.
Q & A
- What is the operating supply voltage range of the DRV8805PWP?
The operating supply voltage range is from 8.2 V to 60 V.
- What is the maximum drive current per channel for the HTSSOP package?
The maximum drive current per channel is 2 A for a single channel on and 1 A for four channels on.
- What types of stepping modes are supported by the DRV8805PWP?
The device supports 2-phase full-step, 1-2 phase half-step, and 1-phase wave drive stepping modes.
- Does the DRV8805PWP have built-in protection features?
Yes, it includes overcurrent protection, short-circuit protection, under-voltage lockout, and overtemperature protection.
- How is a fault condition indicated in the DRV8805PWP?
A fault condition is indicated by the nFAULT pin being driven low.
- What is the purpose of the VCLAMP pin in the DRV8805PWP?
The VCLAMP pin can be connected to the main power supply voltage or to a Zener or TVS diode to allow for fast current decay in loads.
- What package types are available for the DRV8805PWP?
The device is available in a 16-pin HTSSOP package.
- Is the DRV8805PWP RoHS compliant?
Yes, the device is RoHS compliant and free of Sb/Br.
- What are some common applications of the DRV8805PWP?
Common applications include gaming machines and general unipolar stepper motor drivers.
- How does the indexer function in the DRV8805PWP?
The indexer allows motor control with a simple step-and-direction interface, enabling easy control of unipolar stepper motors.
