Microchip Technology

U643B-MFP  

Lighting, Ballast Controllers

U643B-MFP Description

The U643B-MFP is an integrated circuit (IC) designed for automotive flasher control applications, manufactured by Microchip Technology. This obsolete component is classified under the Power Management Integrated Circuit (PMIC) category and is specifically tailored for surface mount applications. The U643B-MFP operates within a supply voltage range of 9V to 15V and draws a supply current of 7 mA. It is housed in a tube package and is unaffected by the REACH regulation, ensuring compliance with environmental standards. The base product number is U643B, and it has a moisture sensitivity level (MSL) of 1, indicating unlimited storage life without the need for dry packaging.

U643B-MFP Features

The U643B-MFP offers several key features that make it a reliable choice for automotive applications:

• Surface Mount Technology (SMT): The surface mount mounting type ensures a compact and robust design, ideal for applications where space is a premium.
• Supply Voltage Range: The wide operating voltage range of 9V to 15V makes it suitable for various automotive electrical systems, providing flexibility and compatibility with different power sources.
• Low Supply Current: Drawing only 7 mA, the U643B-MFP is energy-efficient, contributing to reduced power consumption and longer battery life in automotive applications.
• No Dimming: The absence of dimming functionality simplifies the design and ensures consistent performance, making it ideal for applications where a steady flash rate is required.
• Compliance and Safety: The REACH unaffected status ensures that the component meets environmental and safety standards, making it suitable for use in regions with stringent regulations.
• Moisture Sensitivity Level 1: With an MSL of 1, the U643B-MFP is highly resistant to moisture, ensuring reliability and longevity in various environmental conditions.

U643B-MFP Applications

The U643B-MFP is particularly well-suited for automotive applications where reliable and efficient flasher control is essential. Specific use cases include:

• Turn Signal Indicators: The U643B-MFP provides a consistent and reliable flash rate for turn signal indicators, enhancing road safety and visibility.
• Hazard Lights: It ensures that hazard lights flash at a consistent rate, alerting other drivers to potential hazards and improving overall road safety.
• Emergency Vehicle Lighting: The component's robust design and wide voltage range make it suitable for emergency vehicle lighting systems, which require high reliability and performance.
• Automotive Accessory Lighting: The U643B-MFP can be used in various automotive accessory lighting applications, such as fog lights and backup lights, where a steady flash rate is necessary.

Conclusion of U643B-MFP

The U643B-MFP from Microchip Technology is a versatile and reliable IC designed for automotive flasher control applications. Its surface mount design, wide operating voltage range, and low supply current make it an energy-efficient and space-saving solution. The component's compliance with environmental regulations and its high resistance to moisture further enhance its suitability for automotive applications. While the U643B-MFP is now obsolete, it remains a robust choice for legacy systems and applications where its unique features and advantages are still highly valued.

U643B-MFP Documents

Download datasheets and manufacturer documentation for U643B-MFP

PCN Packaging :

Transfer to Microchip/Label/Pkg 5/Sep/2016      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH