LT3092EDD#TRPBF

Updated: 2026-11-16

Overview

The LT3092EDD#TRPBF is a negative-voltage linear regulator IC manufactured by Analog Devices. It is designed to provide precise and stable voltage regulation in applications requiring low noise and high power supply rejection ratio (PSRR). The device operates over a wide input voltage range and offers adjustable output voltage, making it versatile for various industrial and electronic applications. Packaged in a DFN (Dual Flat No-Lead) form factor, the LT3092EDD#TRPBF is suitable for space-constrained designs while maintaining excellent thermal performance. Its advanced architecture ensures minimal output voltage drift over temperature and time, critical for precision analog circuits.

Structure and Working Principle

The LT3092EDD#TRPBF integrates a high-performance voltage reference, error amplifier, and pass transistor in a single IC. It operates by comparing the output voltage (via a feedback network) with an internal reference, then adjusting the pass transistor to maintain the desired output voltage. The device includes built-in protection features such as current limiting and thermal shutdown. The regulator's architecture enables it to maintain low output noise (typically <30µVRMS) while providing high PSRR (>70dB at 1kHz). This makes it particularly suitable for powering sensitive analog components like ADCs, DACs, and precision amplifiers where clean power is essential for optimal performance.

Key Features

Primary features of the LT3092EDD#TRPBF include an adjustable output voltage range (typically 0V to -19.5V), wide input voltage range (up to -20V), and output current capability up to 200mA. The device offers exceptional line and load regulation characteristics, with typical load regulation of 0.5mV and line regulation of 0.3mV. Thermal performance is enhanced through the DFN package's exposed pad, which facilitates efficient heat dissipation. The IC also features reverse-battery protection and reverse-current protection, enhancing system reliability. Its low dropout voltage (typically 300mV at 200mA) makes it suitable for applications where input voltage headroom is limited.

Application Areas

The LT3092EDD#TRPBF finds extensive use in industrial instrumentation, test and measurement equipment, medical devices, and precision analog systems. Its low-noise characteristics make it ideal for powering sensitive components in audio equipment, RF systems, and data acquisition systems. In medical applications, the regulator's precision and reliability support critical monitoring equipment. For telecommunications infrastructure, it provides clean power to sensitive RF components. The device is also widely used in laboratory equipment where stable power supplies are essential for measurement accuracy and repeatability.

Maintenance and Precautions

Proper thermal management is crucial when using the LT3092EDD#TRPBF. The exposed pad should be soldered to a sufficient copper area on the PCB to dissipate heat effectively. Input and output capacitors must be selected according to the manufacturer's recommendations to ensure stability and optimal performance. Designers should pay attention to PCB layout, keeping sensitive analog traces away from switching regulators and other noise sources. The device's absolute maximum ratings should not be exceeded, particularly for input voltage and operating temperature. For applications requiring extended temperature operation, derating guidelines should be followed.

B2B Procurement Guide

When procuring LT3092EDD#TRPBF, verify the manufacturer's part number and packaging (tape and reel for TRPBF suffix). Lead times can vary based on market demand, so plan inventory accordingly. Consider purchasing from authorized distributors to ensure genuine products and reliable supply chains. For volume purchases, negotiate pricing based on quantity breaks. Evaluate alternative packaging options if reel quantities don't match your production needs. Check for potential counterfeit risks when sourcing from secondary markets, and always verify component authenticity through manufacturer-approved channels.