Overview
The LV8729V-M-TLM-H is a highly integrated PWM current-controlled microstep bipolar stepper motor driver produced by ON Semiconductor. This driver is designed to provide efficient and reliable control over stepper motors, making it suitable for a wide range of applications. It features advanced control mechanisms, robust protection circuits, and a compact package, making it an ideal choice for designers seeking to optimize their motor control systems.
Key Specifications
| Parameter | Symbol | Conditions | Ratings | Unit |
|---|---|---|---|---|
| Supply voltage range | VM, VM1, VM2 | - | 9 to 32 | V |
| Logic input voltage | VIN | - | 0 to 5 | V |
| VREF input voltage range | VREF | - | 0 to 3 | V |
| Output on-resistance (upper side) | - | Ta = 25°C, IO = 1.8A | 0.35Ω | Ω |
| Output on-resistance (lower side) | - | Ta = 25°C, IO = 1.8A | 0.3Ω | Ω |
| Total output on-resistance (upper and lower) | - | Ta = 25°C, IO = 1.8A | 0.65Ω | Ω |
| Thermal shutdown temperature | TSD | - | 150 to 200 | °C |
| Thermal hysteresis width | ΔTSD | - | 40 | °C |
| Standby mode current drain | IMst | ST = “L”, VM+VM1+VM2 | 70 to 100 | μA |
| Current drain (no load) | IM | ST = “H”, OE = “H” | 3.3 to 4.6 | mA |
Key Features
- Single-channel PWM current control stepper motor driver: Supports various excitation modes including 2-phase, 1-2 phase, W1-2 phase, 2W1-2 phase, 4W1-2 phase, 8W1-2 phase, 16W1-2 phase, and 32W1-2 phase.
- BiCDMOS process IC: Ensures high efficiency and reliability.
- Forward and reverse control: Allows for easy direction control of the motor.
- Over current protection circuit: Protects the IC from overcurrent conditions.
- Thermal shutdown circuit: Prevents overheating by shutting down the IC when a threshold temperature is exceeded.
- Input pull down resistance and reset pin: Simplifies the control and reset functions.
- Output short-circuit protection circuit: Prevents damage from output short circuits.
- Open-drain pin for switching holding current: Allows for efficient current management.
Applications
- Robotics: Ideal for robotic systems requiring precise motor control.
- Automated Bill Payment Machines: Used in automated systems for reliable motor operation.
- Electric Fan Control: Suitable for controlling fans in various applications.
- Line-following Robots: Enhances the performance of line-following robots.
- Smart Toys: Used in smart toys for efficient and reliable motor control.
- Aerospace Motion Control: Can be used in aerospace applications requiring high precision.
- Home Appliances: Suitable for various home appliances that require motor control.
- Automotive Applications: Used in automotive systems for reliable motor operation.
Q & A
- What is the LV8729V-M-TLM-H used for?
The LV8729V-M-TLM-H is a PWM current-controlled microstep bipolar stepper motor driver used for controlling stepper motors in various applications.
- What are the supply voltage ranges for the LV8729V-M-TLM-H?
The supply voltage range for the LV8729V-M-TLM-H is from 9V to 32V.
- What are the different excitation modes supported by the LV8729V-M-TLM-H?
The LV8729V-M-TLM-H supports 2-phase, 1-2 phase, W1-2 phase, 2W1-2 phase, 4W1-2 phase, 8W1-2 phase, 16W1-2 phase, and 32W1-2 phase excitation modes.
- Does the LV8729V-M-TLM-H have thermal protection?
Yes, the LV8729V-M-TLM-H has a thermal shutdown circuit that prevents overheating by shutting down the IC when a threshold temperature is exceeded.
- How does the LV8729V-M-TLM-H protect against overcurrent conditions?
The LV8729V-M-TLM-H has an overcurrent protection circuit that protects the IC from overcurrent conditions.
- What is the function of the reset pin on the LV8729V-M-TLM-H?
The reset pin sets the output to the initial mode and fixes the excitation position when set low.
- How does the output short-circuit protection work on the LV8729V-M-TLM-H?
The output short-circuit protection circuit detects short circuits and turns off the output to prevent damage. The output is turned on again after a timer latch period if the short circuit is resolved.
- What is the standby mode current drain of the LV8729V-M-TLM-H?
The standby mode current drain is between 70μA to 100μA when the ST pin is low.
- Is the LV8729V-M-TLM-H RoHS compliant?
Yes, the LV8729V-M-TLM-H is lead-free and RoHS compliant.
- What are some common applications of the LV8729V-M-TLM-H?
The LV8729V-M-TLM-H is used in robotics, automated bill payment machines, electric fan control, line-following robots, smart toys, aerospace motion control, home appliances, and automotive applications.
