LT3066EDE-5#TRPBF

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LT3066EDE-5#TRPBF is a micropower, low noise, low dropout voltage (LDO) linear regulator manufactured by Analog Devices Inc. It operates over an input voltage range of 1.6V to 45V and supplies up to 500mA of output current with a typical dropout voltage of 300mV. This specific part provides a fixed regulated output voltage of 5V. The device features programmable precision current limit accurate to ±10%, active output discharge, and a power good flag. It utilizes a single external capacitor for reference bypass and soft-start functionality.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Features an NMOS pull-down that actively discharges the output when shutdown or input is driven low.
• Includes internal protection circuitry such as current limiting with foldback, thermal limiting, reverse battery protection, and reverse output protection.
• Optimizes stability and transient response with low ESR ceramic capacitors, requiring a minimum of 3.3µF.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered systems
• Automotive power supplies
• Industrial power supplies
• Avionic power supplies
• Portable instruments

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the exact ordering suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the temperature grade label on the shipping container matches the specified operating junction temperature range of –40°C to 125°C. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this fixed 5V variant when a stable 5V rail is required within the 1.6V to 45V input range. Consider the 12-lead DFN package for its thermally enhanced performance in compact designs. Evaluate the need for programmable current limiting via the IMAX pin if precise load protection is necessary for the application.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the LT3066 series of micropower LDO regulators. The series offers both adjustable and fixed output voltage options, including 3.3V and 5V variants. It is designed for applications requiring high ripple rejection and low noise, utilizing a unique architecture where a single external capacitor sets both noise performance and soft-start timing.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

LT3066EDE-5#PBF: Same electrical specifications but supplied in tube packaging instead of tape and reel.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

How is the output discharged during shutdown?

An internal NMOS pull-down actively discharges the output when the SHDN pin or IN pin is driven low.

What is the function of the REF/BYP pin?

Connecting a capacitor to this pin bypasses the reference noise and provides soft-start functionality for the regulator.