LT3099 Ultra-High PSRR Negative Linear Regulators

Introduction

The LT3099 Ultra-High PSRR Negative Linear Regulators from Analog Devices Inc. are designed for noise-sensitive applications, offering exceptional performance with ultra-low noise and high power-supply rejection ratio (PSRR). This component is ideal for various precision power supply needs, making it a valuable addition to any electronic design.

Part Description

The LT3099 is a linear regulator that can supply up to 1A with a dropout voltage of just 350mV. It features a wide output voltage range from 0V to -19V and operates with a quiescent current of only 2.9mA, dropping to a mere 5µA in shutdown mode. The device incorporates a programmable current limit, fast start-up capability, and a bi-directional enable pin, making it versatile for different applications. Its architecture allows for easy paralleling to further reduce noise and increase output current while managing heat dissipation effectively. Built-in protections such as internal current limit with foldback and thermal limit with hysteresis ensure reliable operation.

Applications

• RF power supplies
• Precision power supplies
• Low noise instrumentation
• High-speed and high-precision data converters
• Medical applications (diagnostics and imaging)
• Post-regulator for switching supplies

Industries

• Telecommunications
• Medical devices
• Consumer electronics
• Industrial automation
• Aerospace and defense
• Automotive

Usage Ideas

1. RF Power Supply Design: Utilize the LT3099 to create a low-noise power supply for RF applications, ensuring minimal interference in sensitive circuits.
2. Precision Measurement Instrument: Implement the LT3099 in a high-precision data acquisition system to maintain stable voltage levels and reduce noise in measurements.
3. Medical Imaging Equipment: Integrate the LT3099 into medical imaging devices to provide a reliable and low-noise power source, enhancing the quality of diagnostic images.

Conclusion

The LT3099 Ultra-High PSRR Negative Linear Regulators from Analog Devices Inc. stand out for their low noise and high PSRR capabilities, making them an excellent choice for a variety of precision applications. With its robust features and versatility, the LT3099 is well-suited for industries ranging from telecommunications to medical devices, ensuring reliable performance in noise-sensitive environments.