MIC5270YM5-TR: A Compact 50 mA Low-Dropout Linear Regulator for Precision Power Management

The MIC5270YM5-TR is a high-performance, 50 mA low-dropout (LDO) linear regulator designed for portable and battery-powered applications where space and power efficiency are critical. This device, provided in a miniature SOT-23-5 package, offers a very low dropout voltage of typically 80 mV at 50 mA, making it exceptionally suitable for systems operating with very tight headroom between input and output voltages. Its ultra-low ground current consumption, typically just 40 µA, ensures minimal impact on battery life, a vital feature for power-sensitive designs.

A key advantage of the MIC5270YM5-TR is its high output accuracy of ±2% over line, load, and temperature variations. This precision ensures stable and reliable power for sensitive components like microcontrollers, sensors, and RF modules. The regulator is stable with a small, low-ESR ceramic output capacitor as low as 1.0 µF, further saving valuable board space and reducing overall bill-of-material costs. An integrated enable (EN) pin provides on/off control, allowing the system to place the regulator into a near-zero-power shutdown mode, reducing total system standby current to less than 1 µA.

The device is designed for a wide input voltage range from 2.7V to 16V, supporting various battery types and power sources. It is also protected against over-current and over-temperature conditions, enhancing the robustness of the end application. Common uses include battery-powered equipment, handheld instruments, medical devices, and as a noise-filtering post-regulator for switching power supplies.

ICGOOODFIND: The MIC5270YM5-TR stands out as an excellent solution for designers seeking a tiny, highly efficient, and precise voltage regulator for space-constrained, power-conscious applications.

Keywords: Low-Dropout (LDO), 50 mA, Low Quiescent Current, SOT-23-5, Precision Voltage Regulation.