Overview
The LV8731V-M-TLM-H is a 2-channel H-bridge driver IC produced by onsemi, designed for driving stepper motors and brushed DC motors. It supports micro-step drive with up to 1/16-step resolution and is suitable for applications in office equipment and amusement industries. The IC incorporates a single-channel PWM current control stepper motor driver and a brushed motor driver, offering features such as forward, reverse, brake, and standby modes for motor control.
Key Specifications
| Parameter | Symbol | Unit | Max | Typ | Min | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VM max | V | 36 | - | - | VM, VM1, VM2 |
| Output Peak Current | IO peak | A | 2.5 | - | - | Tw ≤ 10 ms, duty 20%, Per 1ch |
| Output Current | IO max | A | 2 | - | - | Per 1ch |
| Logic Input Voltage High | VINh | V | 5.5 | 2.0 | - | ATT1, ATT2, EMM, RST/BLK, STEP/DC22, FR/DC21, MD2/DC12, MD1/DC11, DM, OE, ST |
| Logic Input Voltage Low | VINl | V | 0.8 | - | 0 | ATT1, ATT2, EMM, RST/BLK, STEP/DC22, FR/DC21, MD2/DC12, MD1/DC11, DM, OE, ST |
| Operating Temperature | Topr | °C | 85 | - | -40 | - |
| Storage Temperature | Tstg | °C | 150 | - | -55 | - |
| Allowable Power Dissipation | Pd max | W | 3.25 | - | - | Note 1 |
Key Features
- Micro-step Mode: Supports full-step, half-step, quarter-step, and 1/16-step resolutions.
- PWM Current Control: Automatically exercises PWM constant-current chopping control for motor current.
- Output Short-circuit Protection: Selectable from latch-type or auto-reset-type protection circuits.
- BiCDMOS Process IC: Low on-resistance (Upper Side: 0.3 Ω; Lower Side: 0.25 Ω).
- Motor Current Selection: Current selectable in four steps.
- Forward/Reverse Switching: Supports clockwise and counter-clockwise modes.
- No Control Power Supply Required: Internal regulator and charge pump circuits.
- Unusual Condition Warning Output Pins: For monitoring and warning of unusual conditions.
Applications
The LV8731V-M-TLM-H is ideally suited for driving brushed DC motors and stepper motors in various applications, including:
- Office equipment such as printers and scanners.
- Amusement industry devices like arcade machines and gaming consoles.
- Other applications requiring precise motor control and micro-step capabilities.
Q & A
- What is the maximum supply voltage for the LV8731V-M-TLM-H?
The maximum supply voltage is 36 V. - What is the maximum output current per channel?
The maximum output current per channel is 2 A. - What are the supported micro-step resolutions?
The IC supports full-step, half-step, quarter-step, and 1/16-step resolutions. - How is the motor current controlled?
The motor current is controlled using PWM constant-current chopping. - What type of output short-circuit protection is available?
The IC offers selectable latch-type or auto-reset-type output short-circuit protection. - What is the operating temperature range?
The operating temperature range is from -40°C to 85°C. - Does the IC require an external control power supply?
No, the IC does not require an external control power supply as it has internal regulator and charge pump circuits. - How is the forward/reverse mode switched?
The forward/reverse mode is switched by setting the FR pin. - What is the purpose of the MONI pin?
The MONI pin is for position detection monitoring and is of an open-drain type. - What is the allowable power dissipation?
The allowable power dissipation is 3.25 W.
