onsemi

LB1845-E

LB1845-E Description

The LB1845-E is a general-purpose motor driver IC designed by onsemi, featuring a bipolar technology and a half-bridge output configuration. This device is specifically tailored for driving bipolar stepper motors with a supply voltage range of 4.75V to 5.25V and a load voltage range of 10V to 44.5V. The LB1845-E supports step resolutions of 1/2 and 1/4, making it suitable for applications requiring precise motor control. The IC is housed in a 28-pin HDIP package and features a through-hole mounting type, ensuring robust mechanical stability and compatibility with various PCB designs. Although the product is now obsolete, its unique features and performance benefits continue to be relevant in specific applications.

LB1845-E Features

• Output Configuration: The LB1845-E employs a half-bridge (4) output configuration, enabling efficient control of bipolar stepper motors.
• Current Capability: It supports an output current of 1.5A, ensuring reliable operation under moderate load conditions.
• Voltage Ranges: The IC operates within a supply voltage range of 4.75V to 5.25V and can handle load voltages from 10V to 44.5V, providing flexibility in power supply and motor voltage requirements.
• Step Resolution: With step resolutions of 1/2 and 1/4, the LB1845-E offers precise control over motor movement, making it ideal for applications requiring high accuracy.
• Mounting Type: The through-hole mounting type ensures mechanical robustness and compatibility with traditional PCB assembly techniques.
• Interface: The parallel interface facilitates straightforward integration with control systems, allowing for efficient data transfer and control.
• Compliance: The LB1845-E is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the IC is suitable for storage and handling in various environmental conditions without the risk of moisture-related damage.

LB1845-E Applications

The LB1845-E is well-suited for a variety of general-purpose applications where precise motor control is essential. Its ability to drive bipolar stepper motors with high accuracy makes it ideal for:

• Industrial Automation: In applications such as robotic arms, conveyor systems, and CNC machines, where precise positioning and movement control are required.
• Medical Equipment: For devices like medical imaging machines, where accurate motor control ensures reliable operation and patient safety.
• Office Automation: In printers, scanners, and other office equipment, where precise motor control enhances performance and reliability.
• Consumer Electronics: For applications in home appliances and consumer electronics that require precise motor control, such as washing machines and HVAC systems.

Conclusion of LB1845-E

The LB1845-E, despite being obsolete, remains a robust and versatile motor driver IC with a wide range of applications. Its unique features, such as the half-bridge output configuration, precise step resolution, and compatibility with various voltage ranges, make it a reliable choice for driving bipolar stepper motors. The through-hole mounting type and parallel interface ensure easy integration into existing systems, while its compliance with international regulations and moisture sensitivity level provide additional assurance for users. Although newer alternatives may be available, the LB1845-E continues to offer significant value in specific applications where its features are most beneficial.