Microchip LDO voltage-regulator family with low noise and high PSRR

Microchip Technology Inc., announced the MCP1755 and MCP1755S family of CMOS Low-Dropout (LDO) voltage regulators.  These LDOs have an input voltage range of 3.6-16V and deliver an output current of 300 mA at output voltages of 1.8-5.5V, while consuming only 68 µA of quiescent current (typical).  Additionally, the LDOs have a shutdown pin, enabling them to consume less than 0.1 µA (typical) during shutdown mode, which extends battery lifetimes.  The LDOs are offered in SOT and 2×3 mm DFN packages.
microchip circuit diagram
Many of today’s electronic designs need to operate in environments that contain high levels of electrical and magnetic noise.  Noise is generated when switching transients and RF signals get coupled onto power-supply lines.  Applications such as GFCI and AFCI circuit breakers, wireless devices, automotive-aftermarket electronics, and medical devices are sensitive to this power-supply noise.  These LDOs have a high Power Supply Rejection Ratio (PSRR) of 70 dB @ 1 kHz, which filters input noise and provides significantly cleaner output voltages, making them well suited for noise-sensitive applications.
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Ibrar Ayyub

Ibrar Ayyub is an experienced technical writer with a Master's degree in computer science from BZU Multan University. He has written for various industries, mainly home automation, and engineering. He has a clear and simple writing style and is skilled in using infographics and diagrams. He is a great researcher and is able to present information in a well-organized and logical manner.

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