Overview
The LV8549MC-BH is a low saturation voltage stepper motor driver IC produced by onsemi. It is designed for optimal performance in full-step motor drive applications, particularly in 12V system products. This IC features DMOS output transistors, which provide low on-resistance, and is packaged in a compact SOIC10 format. The LV8549MC-BH operates with a single power supply, eliminating the need for a separate control system power supply, and it consumes zero current when in standby mode.
Key Specifications
| Parameter | Symbol | Conditions | Min | Unit | ||
|---|---|---|---|---|---|---|
| Maximum power supply voltage | VCC max | -0.3 to +20 | - | - | - | V |
| Output impression voltage | VOUT | -0.3 to +20 | - | - | - | V |
| Input impression voltage | VIN | -0.3 to +6 | - | - | - | V |
| GND pin outflow current | IGND | Per channel | - | - | 1.0 | A |
| Power supply current in standby mode | ICC0 | ENA=L | - | 1 | - | μA |
| Power supply current in operation mode | ICC1 | ENA=H, no-load | 1.7 | 2.3 | - | mA |
| Input current | IIN | VIN=5V | 30 | 50 | 65 | μA |
| Thermal shutdown operating temperature | Ttsd | - | 150 | 180 | 210 | °C |
| Temperature hysteresis width | ΔTtsd | - | - | 40 | - | °C |
| Low voltage protection function operation voltage | VthVCC | - | 3.3 | 3.5 | 3.65 | V |
| Release voltage | Vthret | - | 3.55 | 3.8 | 3.95 | V |
| Output ON resistance (Upper and lower total) | RON | IOUT=1.0A | 0.7 | 1 | 1.25 | Ω |
| Output leak current | IOleak | VO=16V | - | - | 10 | μA |
| Diode forward voltage | VD | ID=1.0A | - | - | - | V |
Key Features
- DMOS Output Transistors: The IC adopts DMOS output transistors with a total on-resistance of 1Ω (typical), ensuring efficient and low-loss operation.
- Compact Package: The LV8549MC-BH is packaged in a compact SOIC10 format, making it suitable for space-constrained applications.
- Single Power Supply: The IC operates with a single power supply, eliminating the need for a separate control system power supply.
- Zero Standby Current: The IC consumes zero current when in standby mode, which is beneficial for power-saving applications.
- Thermal Shutdown Function: The IC includes a thermal shutdown circuit that turns off the output when the junction temperature exceeds 180°C, with automatic restoration when the temperature falls.
- Low Voltage Protection: The IC features a low voltage protection function that ensures the output is turned off when the supply voltage drops below a certain threshold.
Applications
- Stepper Motor Control: The LV8549MC-BH is specifically designed for controlling stepper motors in full-step mode, making it ideal for applications requiring precise motor control.
- Industrial Automation: Suitable for use in industrial automation systems where reliable and efficient motor control is crucial.
- Medical Devices: Can be used in medical devices that require precise motor control, such as in medical imaging equipment or robotic systems.
- Consumer Electronics: Applicable in consumer electronics that use stepper motors, such as 3D printers, CNC machines, and other precision devices.
Q & A
- What is the maximum power supply voltage for the LV8549MC-BH?
The maximum power supply voltage is 20V.
- What is the typical on-resistance of the DMOS output transistors?
The typical on-resistance is 1Ω.
- Does the LV8549MC-BH require a separate control system power supply?
No, it operates with a single power supply.
- What is the current consumption in standby mode?
The current consumption in standby mode is 0 μA.
- What is the thermal shutdown operating temperature?
The thermal shutdown operating temperature is typically 180°C.
- What is the purpose of the low voltage protection function?
The low voltage protection function ensures the output is turned off when the supply voltage drops below a certain threshold (typically 3.5V).
- How many terminals does the LV8549MC-BH have?
The LV8549MC-BH has 10 terminals.
- What is the package type of the LV8549MC-BH?
The package type is SOIC10.
- What is the maximum output current of the LV8549MC-BH?
The maximum output current is 1A.
- Is the LV8549MC-BH suitable for high-temperature environments?
The IC has a thermal shutdown function to protect against high temperatures, but it is generally designed for operating temperatures up to 150°C.
