Overview
The L6470HTR, produced by STMicroelectronics, is an advanced fully integrated microstepping motor driver designed for driving two-phase bipolar stepper motors. Realized in analog mixed signal technology, this device integrates a dual low RDS(on) DMOS full bridge with accurate on-chip current sensing circuitry for non-dissipative current control and overcurrent protection. It features a unique control system that achieves a true 1/128 steps resolution and allows for user-defined motion profiles with acceleration, deceleration, speed, or target position, all programmable through a dedicated set of registers via a standard 5-Mbit/s SPI interface.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 8 - 45 V |
| Peak Output Current | 7.0 A (3.0 A r.m.s.) |
| Power MOSFETs | Low RDS(on) |
| Microstepping Resolution | Up to 1/128 steps |
| Interface | SPI (5-Mbit/s) |
| Quiescent and Standby Currents | Low |
| Overcurrent Protection | Programmable non-dissipative on high and low-side |
| Overtemperature Protection | Two levels |
| Package | HTSSOP28 |
| Operating Temperature | -40°C to 150°C |
Key Features
- Programmable speed profile and positioning
- Programmable power MOS slew rate
- Sensorless stall detection
- Low quiescent and standby currents
- Programmable non-dissipative overcurrent protection on high and low-side
- Two levels of overtemperature protection
- Thermal, low bus voltage, overcurrent, and motor stall protections
Applications
- Communications equipment
- Computers and peripherals
- Industrial automation
- Personal electronics
Q & A
- What is the operating voltage range of the L6470HTR?
The operating voltage range is 8 - 45 V.
- What is the peak output current of the L6470HTR?
The peak output current is 7.0 A (3.0 A r.m.s.).
- What is the microstepping resolution of the L6470HTR?
The microstepping resolution is up to 1/128 steps.
- What interface does the L6470HTR use for communication?
The L6470HTR uses a standard 5-Mbit/s SPI interface.
- Does the L6470HTR have overcurrent protection?
Yes, it has programmable non-dissipative overcurrent protection on both high and low sides.
- What are the key protections provided by the L6470HTR?
The device includes thermal, low bus voltage, overcurrent, and motor stall protections.
- What is the package type of the L6470HTR?
The package type is HTSSOP28.
- What are the typical applications of the L6470HTR?
Typical applications include communications equipment, computers and peripherals, industrial automation, and personal electronics.
- Does the L6470HTR support sensorless stall detection?
Yes, it supports sensorless stall detection.
- Can the L6470HTR be programmed for different motion profiles?
Yes, it can generate user-defined motion profiles with acceleration, deceleration, speed, or target position.
