LT1965IQ#PBF - Low Noise, Low Dropout Linear Regulator

The LT1965IQ#PBF is a high-performance, low dropout linear regulator designed and manufactured by Linear Technology, now part of Analog Devices. This regulator offers a stable and reliable power supply solution for applications requiring low noise, fast transient response, and low dropout voltage. It is ideal for powering noise-sensitive circuits such as precision data converters, RF systems, and high-end audio equipment.

Key Features

• Low Dropout Voltage: The LT1965IQ#PBF boasts a low dropout voltage of only 300mV at full load, which allows for efficient operation even when the input-to-output voltage difference is minimal, ensuring a stable output even under low input voltage conditions.
• Adjustable Output: It offers an adjustable output from 1.2V to 20V, which can be set by external resistors, providing flexibility for various design requirements.
• High Output Current: Capable of delivering up to 1.1A of continuous output current, this regulator can handle a wide range of power demands.
• Low Noise: With an output noise as low as 40µVRMS over a 10Hz to 100kHz bandwidth, the LT1965IQ#PBF is an excellent choice for sensitive applications where power supply noise can impact performance.
• Fast Transient Response: The device responds quickly to changes in load, ensuring a stable output voltage even during rapid load changes, which is crucial for high-speed digital circuits and other sensitive components.
• Stable with Low ESR Ceramic Capacitors: The LT1965IQ#PBF remains stable with ceramic output capacitors, which are smaller, more reliable, and have lower equivalent series resistance (ESR) than their tantalum counterparts.
• Protection Features: It includes built-in protection features such as overcurrent and overtemperature protection, enhancing the reliability and longevity of both the regulator and the overall system.
• Thermal Performance: The device is offered in a 5-lead TO-220 package, which provides excellent thermal performance and is suitable for demanding environments.

Applications

The versatile LT1965IQ#PBF is suitable for a wide range of applications including:

• High-end Audio Equipment
• Precision Data Acquisition Systems
• RF and Wireless Infrastructure
• Medical Equipment
• Industrial Instrumentation

With its combination of low noise, high output current, and fast transient response, the LT1965IQ#PBF linear regulator is an excellent choice for designers seeking to optimize power management in their high-performance applications.