The LT3060 series from Analog Devices represents a family of micropower, low dropout voltage (LDO) linear regulators, designed to deliver up to 100mA of output current. These regulators are notable for their ability to operate over a wide input supply range of 1.6V to 45V. A distinctive feature of the LT3060 is its low quiescent current of 40µA, making it suitable for battery-powered applications where power efficiency is crucial.
The regulators offer a typical dropout voltage of 300mV, ensuring efficient operation even at low input-to-output voltage differentials. The LT3060 series also stands out for its low noise performance, with an output noise level of just 30µVRMS across the 10Hz to 100kHz frequency range. This feature, combined with the ability to adjust the output voltage from a 600mV reference up to 44.5V, makes the LT3060 an ideal choice for sensitive analog circuits and other applications requiring a clean power supply.
Furthermore, the LT3060 series incorporates several protective features, including reverse battery protection, current limit foldback, and thermal limit protection, ensuring reliable operation under various conditions. The regulators are available in both fixed and adjustable output voltage versions, providing flexibility for different design requirements. Offered in compact DFN and ThinSOT™ packages, the LT3060 series is suitable for space-constrained applications.
Linear Regulator
Linear voltage regulators are fundamental components in electronic circuits, providing stable and precise voltage levels from a higher-voltage power supply. The primary function of a linear regulator is to maintain a constant output voltage despite variations in input voltage and load current. This makes them indispensable in applications requiring stable power supply conditions.
When selecting a linear regulator, several key parameters need to be considered, including input voltage range, output current capacity, dropout voltage, noise performance, and power dissipation. The dropout voltage is particularly important for battery-powered applications, as it determines the minimum input voltage required to maintain regulation. Low dropout (LDO) regulators, like the LT3060 series, are designed to operate efficiently with a small input-to-output voltage differential, extending battery life.
Noise performance is another critical factor, especially in sensitive analog and RF applications. Regulators with low output noise can significantly improve the performance of these circuits. Additionally, features like adjustable output voltage, thermal protection, and low quiescent current draw are desirable for versatile and energy-efficient designs.
Overall, the choice of a linear regulator should be guided by the specific requirements of the application, considering factors such as the required voltage level, current capacity, power efficiency, package size, and additional features like protection circuits.