Analog Devices Inc.

LT3082EST

LT3082EST Description

The LT3082EST is a high-performance linear voltage regulator designed by Analog Devices Inc., featuring an adjustable output voltage and a maximum output current of 200mA. This regulator is housed in a surface-mount SOT223 package, making it suitable for compact and efficient power supply designs. The LT3082EST operates with an input voltage range up to 40V and offers a maximum output voltage of 38.5V, providing flexibility for various applications. It has a quiescent current of only 500 µA, which is advantageous for low-power applications. The regulator also boasts a high power supply rejection ratio (PSRR) of 90dB at 120Hz, which drops to 20dB at 1MHz, ensuring excellent noise filtering and stability.

LT3082EST Features

• Adjustable Output Voltage: The LT3082EST provides an adjustable output voltage ranging from 0V to 38.5V, offering great flexibility for different power supply requirements.
• Low Dropout Voltage: With a maximum dropout voltage of 1.65V at 200mA, the LT3082EST ensures high efficiency even at low input-to-output voltage differences.
• High PSRR: The regulator exhibits a high PSRR of 90dB at 120Hz, which reduces to 20dB at 1MHz, making it suitable for applications where noise reduction is critical.
• Protection Features: The LT3082EST includes over-current, over-temperature, reverse polarity, and short-circuit protection, enhancing the reliability and safety of the power supply.
• Surface-Mount Package: The SOT223 package allows for easy integration into compact designs and ensures robust mechanical stability.
• Low Quiescent Current: The regulator operates with a quiescent current of only 500 µA, making it ideal for battery-powered and low-power applications.

LT3082EST Applications

The LT3082EST is well-suited for a variety of applications that require a reliable and efficient power supply solution. Some specific use cases include:

• Battery-Powered Devices: The low quiescent current and adjustable output voltage make the LT3082EST ideal for extending battery life in portable devices.
• Low-Noise Power Supplies: The high PSRR and low dropout voltage ensure stable and clean power delivery, making it suitable for sensitive analog circuits and precision instruments.
• Industrial Equipment: The robust protection features and wide input voltage range make the LT3082EST a reliable choice for industrial applications where reliability and safety are paramount.
• Medical Devices: The combination of low noise, high PSRR, and comprehensive protection features makes the LT3082EST suitable for medical equipment that requires precise and stable power supply.

Conclusion of LT3082EST

The LT3082EST from Analog Devices Inc. is a versatile and high-performance linear voltage regulator that offers a range of features and benefits for various applications. Its adjustable output voltage, low dropout voltage, high PSRR, and comprehensive protection features make it a reliable and efficient choice for power supply designs. The surface-mount SOT223 package ensures easy integration into compact and space-constrained systems. While the product is now obsolete, its legacy continues to influence the design of modern power supply solutions. For applications requiring a reliable, low-noise, and efficient power supply, the LT3082EST remains a notable reference point in the field of linear voltage regulation.