Microchip Technology's MCP1643-I/MS DC-DC Converter

The MCP1643-I/MS from Microchip Technology is a compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converter that provides an easy-to-use power supply solution for a wide range of applications. Enclosed in a 10-MSOP (Mini Small Outline Package), this device is designed to operate from a single-cell alkaline, NiCd, NiMH, or Li-Ion battery, making it ideal for portable electronic devices where extended battery life is crucial.

With an input voltage range of 0.65V to 5.5V, the MCP1643-I/MS is capable of starting up with a minimum input voltage of 0.65V and can continue to operate down to 0.35V after startup, ensuring continuous power delivery even as the battery voltage declines. This feature is particularly important for devices that need to extract the maximum available energy from their battery source.

The converter boasts an adjustable output voltage range from 2.0V to 5.5V, allowing designers to tailor the output to precisely match the needs of their specific application. This flexibility makes the MCP1643-I/MS suitable for powering LEDs, microcontrollers, and other low-power devices that require a regulated voltage supply.

Efficiency is a key strength of the MCP1643-I/MS, with a typical value up to 96%, which helps to minimize power losses and extend battery life. The device also features a true load disconnect option which disconnects the load from the battery when the device is disabled, further conserving energy.

The MCP1643-I/MS includes several protective features to ensure the longevity and reliability of the application. These features include under-voltage lockout (UVLO), over-temperature protection, and over-current limiting. Additionally, the device has an internal synchronous rectifier, which enhances efficiency by reducing diode losses.

For designers seeking a power-efficient, versatile, and reliable step-up converter, the MCP1643-I/MS from Microchip Technology is an excellent choice that combines performance with ease of use in a small footprint.