ADP121-AUJZ30R7

Product Overview

The ADP121-AUJZ30R7 from Analog Devices Inc. is a positive fixed-output linear voltage regulator designed to provide a single 3V output. The device accepts input voltages up to 5.5V and delivers up to 150mA, making it appropriate for low-current power rails. It uses a surface-mount TSOT-23-5 package and includes an enable control feature, along with over-current, over-temperature, and under-voltage lockout protection. The operating temperature range is -40°C to 125°C.

Key Features

• Fixed 3V positive output with a single regulator channel.
• Input voltage up to 5.5V and output current up to 150mA.
• Low quiescent current of 21 µA and maximum supply current of 40 µA.
• Enable control feature for regulator state management.
• Protection features include over-current, over-temperature, and under-voltage lockout.
• Surface-mount TSOT-23-5 package with operating temperature range -40°C to 125°C.

Applications

• Portable electronics requiring a fixed 3V supply for low-current circuitry.
• Battery-powered embedded systems using an enable control to manage a 3V rail.
• Microcontroller and sensor board 3V supply.

Design & Procurement Notes

When selecting ADP121-AUJZ30R7, confirm that the input voltage does not exceed 5.5V and that the load current remains within 150mA. Because the output is fixed at 3V, this regulator is appropriate only for designs that require a 3V rail and is not an adjustable-output regulator. The enable feature can be used to control regulator operation, while over-current, over-temperature, and under-voltage lockout protections add fault response. Designers should still evaluate thermal dissipation, board layout, and package suitability for the surface-mount TSOT-23-5 form. The operating temperature range is -40°C to 125°C and should be checked against the intended environment.