Microchip Technology's HV852MG-G High-Voltage EL Lamp Driver

The HV852MG-G is a sophisticated, high-voltage electroluminescent (EL) lamp driver integrated circuit (IC) designed by Microchip Technology, a leader in microcontroller, mixed-signal, analog, and Flash-IP solutions. This IC is specifically engineered to efficiently drive EL lamps of up to 7 square inches in size, making it an ideal solution for a wide range of applications that require backlighting such as LCD displays, keypads, and other user interfaces.

Utilizing a proprietary high-voltage CMOS process, the HV852MG-G is capable of delivering a high-voltage output up to 220V from a low-voltage power supply. This driver IC operates from a 2.5V to 5.5V input, which allows it to be used in portable battery-powered devices without the need for an external step-up converter. Its integrated boost converter with an internal 2.0A MOSFET minimizes the number of external components and simplifies the overall design process.

The HV852MG-G features a low operating frequency that is adjustable up to 300Hz, which helps in reducing audible noise that can be a concern in noise-sensitive applications. Additionally, it offers a gradual fade-in/fade-out effect that enhances the visual experience and can also serve as a power-saving feature by reducing the perceived brightness when full illumination is not necessary.

For safety and longevity, the IC incorporates thermal shutdown protection and automatic overvoltage shutdown, ensuring reliable operation under various conditions. The HV852MG-G is available in an 8-lead SOIC package, providing a compact footprint that is valuable for space-constrained designs.

Overall, the HV852MG-G from Microchip Technology is a high-performance, reliable, and easy-to-use solution for driving EL lamps. Its integration of multiple features and protections makes it an excellent choice for designers looking to enhance the user interface of their products with high-quality, efficient backlighting.

For detailed technical specifications, application notes, and support resources, designers and engineers are encouraged to visit Microchip Technology's official website or contact their support team.