Microchip’s MIC24045/MIC24046 series of I²C-programmable, high-efficiency step-down regulators are perfectly suited for multi-voltage rail applications that are typically found in computing and telecommunication systems. These regulators have a wide input range and are rated up to 5 A. Several parameters can be programmed into the MIC24045 device via I2C such as output voltage, switching frequency, soft-start slope, margining, current limit values and start-up delays. The wide switching frequency adjustment range, valley-current mode control technique, high-performance error amplifier, and external compensation help manage system trade-offs to optimize high efficiency performance and at the same time providing the smallest possible solution size.

Extensive diagnostics and status information via the I²C interface are supported in the MIC24045 as well. The MIC24045 pin-out is compatible with the MIC24046 pin-strapping programmable regulator pin-out, such that I2C-based implementations can be easily converted into pin-programmable ones. The MIC24045 is available in thermally-efficient, space-saving 20-pin 3 mm x 3 mm FQFN package with an operating junction temperature range from -40°C to +125°C.