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LT1763IDE-3.3

LT1763IDE-3.3 Description

The LT1763IDE-3.3 is a high-performance, low-dropout (LDO) linear voltage regulator from Analog Devices Inc., designed to deliver a fixed 3.3V output with a maximum current of 500mA. This regulator operates with an input voltage range up to 20V, making it suitable for a variety of power supply applications. Its low dropout voltage of 0.45V at 500mA ensures efficient operation even when the input voltage is close to the output level. The device features low quiescent current (75 µA) and high power supply rejection ratio (PSRR) of 65dB at 120Hz, making it ideal for noise-sensitive circuits.

LT1763IDE-3.3 Features

• Fixed 3.3V Output: Ensures stable voltage regulation for precision applications.
• Low Dropout Voltage: 0.45V at 500mA minimizes power dissipation.
• High PSRR (65dB): Excellent noise rejection for sensitive analog/digital circuits.
• Low Quiescent Current (75 µA): Enhances efficiency in battery-powered systems.
• Protection Features: Includes over-current, over-temperature, and reverse-polarity protection for robust operation.
• Enable Control: Allows for power management via an external enable pin.
• Surface-Mount Package (12DFN): Compact form factor suitable for space-constrained designs.
• Wide Input Range (Up to 20V): Supports diverse power sources.

LT1763IDE-3.3 Applications

The LT1763IDE-3.3 is ideal for applications requiring stable, low-noise power with high efficiency. Key use cases include:

• Portable/Battery-Powered Devices: Due to its low quiescent current and dropout voltage.
• Industrial Control Systems: Where high PSRR ensures reliable operation in noisy environments.
• Medical Electronics: Precision voltage regulation for sensitive instrumentation.
• Automotive Electronics: Robust protection features enhance durability.
• RF/Communication Systems: Low noise output supports signal integrity.

Conclusion of LT1763IDE-3.3

The LT1763IDE-3.3 stands out as a high-efficiency, low-noise LDO regulator with exceptional PSRR and protection features. Its wide input range, low dropout, and compact package make it a versatile choice for demanding applications in industrial, medical, and portable electronics. While marked as obsolete, its performance characteristics ensure it remains a reliable solution for legacy designs or systems requiring its unique specifications.