LT1965IDD#TRPBF

Product Overview

The LT1965IDD#TRPBF from Analog Devices Inc. is a single-output, adjustable positive linear regulator for low-dropout voltage regulation in surface-mount power circuits. It accepts input voltages up to 20 V and provides an adjustable output from 1.2 V to 19.5 V at up to 1.1 A, with a maximum dropout of 0.49 V at 1.1 A. The device includes an enable control and protection against overcurrent, overtemperature, and reverse polarity. It is housed in an 8-WFDFN exposed-pad, 8-DFN (3x3) package and operates over a temperature range of -40°C to 125°C.

Key Features

• Positive adjustable linear regulator with one output and a 1.1 A output current rating.
• Input voltage up to 20 V and adjustable output from 1.2 V to 19.5 V.
• Maximum dropout voltage of 0.49 V at 1.1 A.
• Enable control, with overcurrent, overtemperature, and reverse-polarity protection.
• Quiescent current of 1.1 mA and maximum supply current of 40 mA.
• Power-supply rejection ratio of 75 dB at 120 Hz.
• Surface-mount 8-WFDFN exposed-pad package in 8-DFN (3x3).

Applications

• Adjustable positive supply rails for embedded logic, sensor, and analog board sections.
• Regulated intermediate voltage distribution in control and instrumentation hardware.
• Selective activation or power sequencing using the enable control.

Design & Procurement Notes

Designers can set the output within the 1.2 V to 19.5 V range while keeping the input at or below 20 V and preserving enough headroom to meet the 0.49 V dropout at 1.1 A. The 1.1 mA quiescent current and 40 mA maximum supply current should be included in power-budget calculations. The enable control supports controlled activation, and the overcurrent, overtemperature, and reverse-polarity protections are part of the device protection features. The 8-WFDFN exposed-pad, 8-DFN (3x3) surface-mount package and -40°C to 125°C operating range should guide board layout and thermal planning.