Overview
The LV8731VGEVB is an evaluation board designed for the LV8731V, a 2-channel H-bridge driver IC produced by onsemi. This IC is capable of driving both stepper motors and brushed DC motors, making it versatile for various applications. The LV8731V supports micro-step drive with up to 1/16-step resolution and includes features such as PWM current control, low on-resistance, and output short-circuit protection. It is particularly suited for use in office equipment and amusement applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|---|
| Supply Voltage | VM max | VM, VM1, VM2 | - | - | 36 | V |
| Output Peak Current | IO peak | Tw ≤ 10 ms, duty 20%, Per 1ch | - | - | 2.5 | A |
| Output Current | IO max | Per 1ch | - | - | 2 | A |
| Logic Input Voltage | VIN | ATT1, ATT2, EMM, RST/BLK, STEP/DC22, FR/DC21, MD2/DC12, MD1/DC11, DM, OE, ST | -0.3 | - | 6 | V |
| Allowable Power Dissipation | Pd max | Note 1 | - | - | 3.25 | W |
| Operating Temperature | Topr | - | -40 | - | 85 | °C |
| Storage Temperature | Tstg | - | -55 | - | 150 | °C |
Key Features
- Single-channel PWM current control stepper motor driver (selectable with DC motor driver channel 2)
- BiCDMOS process IC
- Low on-resistance (upper side: 0.3 Ω, lower side: 0.25 Ω, total of upper and lower: 0.55 Ω at TA = 25°C, IO = 2 A)
- Micro-step mode can be set to Full-step, Half-step, Quarter-step, or 1/16-step
- Excitation step proceeds only by step signal input
- Motor current selectable in four steps
- Output short-circuit protection circuit (selectable from Latch-type or Auto-reset-type)
- Unusual condition warning output pins
- No control power supply required
Applications
The LV8731V is ideally suited for driving brushed DC motors and stepper motors used in various applications, including:
- Office equipment
- Amusement applications
Q & A
- What is the LV8731V?
The LV8731V is a 2-channel H-bridge driver IC designed for driving stepper motors and brushed DC motors.
- What is the micro-step resolution of the LV8731V?
The LV8731V supports micro-step drive with up to 1/16-step resolution.
- What is the maximum output current of the LV8731V?
The maximum output current per channel is 2 A.
- What is the operating temperature range of the LV8731V?
The operating temperature range is from -40°C to +85°C.
- Does the LV8731V have output short-circuit protection?
Yes, it includes an output short-circuit protection circuit that can be set to either Latch-type or Auto-reset-type.
- What are the typical applications of the LV8731V?
The LV8731V is typically used in office equipment and amusement applications.
- What is the logic input voltage range for the LV8731V?
The logic input voltage range is from -0.3 V to +6 V.
- Does the LV8731V require a control power supply?
No, the LV8731V does not require a control power supply.
- How many steps can the motor current be selected in?
The motor current can be selected in four steps.
- What is the allowable power dissipation of the LV8731V?
The allowable power dissipation is 3.25 W.
