ADP121-AUJZ25R7

Product Overview

The ADP121-AUJZ25R7 from Analog Devices Inc. is a positive fixed-output linear voltage regulator in a surface-mount TSOT-23-5 package. It provides a single 2.5V output at up to 150mA from an input voltage up to 5.5V. The device includes an enable control and protection against over current, over temperature, and under-voltage lockout. Its 21 µA quiescent current and 66dB PSRR at 10kHz support low-power regulation in compact embedded designs.

Key Features

• Fixed 2.5V positive output with a single regulator channel
• Maximum input voltage of 5.5V and output current capability of 150mA
• 21 µA quiescent current and maximum supply current of 40 µA
• 66dB power-supply rejection at 10kHz
• Enable control feature for active or standby operation
• Over current, over temperature, and under-voltage lockout protection
• Operating temperature range of -40°C to 125°C
• Surface-mount SOT-23-5 Thin / TSOT-23-5 package

Applications

• Fixed 2.5V supply rail for low-current sensor modules and measurement circuits
• Regulated power for microcontroller peripherals and digital logic interfaces requiring a single positive output
• Enable-controlled power delivery in compact embedded assemblies
• Low-current load regulation in portable electronic devices

Design & Procurement Notes

Designers should confirm that the application requires a fixed 2.5V rail and that the input voltage remains at or below 5.5V. The 150mA output limit should be checked against the connected load, and the enable control can be used to reduce system power when the regulator is not needed. The protection features provide response to over current, over temperature, and under-voltage conditions, while the -40°C to 125°C operating range and TSOT-23-5 surface-mount package should be considered during board layout and thermal planning. For procurement, confirm the exact part number ADP121-AUJZ25R7 and the package footprint when preparing assembly documentation.