LT3065EMSE-3.3#TRPBF

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

The LT3065EMSE-3.3#TRPBF is a micropower, low noise, low dropout voltage 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 3.3V. The device features programmable precision current limit accurate to ±10%, a power good flag, and low noise performance of 25µVRMS from 10Hz to 100kHz. It is housed in a 12-lead MSOP package and supports operation from -40°C to +125°C.

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

• Single external capacitor sets reference noise performance and enables output soft-start functionality
• External resistor programs precise current limit with foldback protection across wide temperature ranges
• Optimized for stability with low ESR ceramic capacitors requiring a minimum of 3.3µF
• Includes internal protections against thermal limiting, reverse battery, reverse current, and reverse output conditions

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 component matches the exact LT3065EMSE-3.3#TRPBF designation, ensuring the #TRPBF suffix indicates tape and reel packaging rather than tube. Confirm the manufacturer is Analog Devices Inc. and check that the marking corresponds to the specified 12-lead MSOP package. Ensure the operating temperature grade aligns with system requirements for the -40°C to +125°C range.

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

Select this regulator when a fixed 3.3V output is required alongside high input voltage tolerance up to 45V. It is suitable for applications needing low quiescent current and precise current limiting without complex programming. Consider the 12-lead MSOP package for space-constrained designs. Verify that the load current does not exceed 500mA and that the input-to-output differential voltage remains within safe operating limits.

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

This component belongs to the LT3065 Series of linear regulators, which are designed for micropower and low-noise applications. The series includes adjustable versions and various fixed output voltages such as 1.2V, 1.5V, 1.8V, 2.5V, and 5V. The EMSE variant specifically denotes the industrial temperature grade (-40°C to +125°C) in a 12-lead MSOP package, distinguishing it from automotive or extended temperature options.

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

LT3065IMSE-3.3#TRPBF

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

How is the current limit programmed on the LT3065EMSE-3.3?

The current limit is programmed using a single external resistor connected between the IMAX pin and ground. This setting is accurate to ±10% over the full input voltage and temperature range.

What is the minimum output capacitance required for stability?

The device requires a minimum of 3.3µF of low ESR ceramic output capacitance to ensure stability and optimal transient response.