ADP7105ARDZ-R7

Overview

The ADP7105ARDZ-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc. It operates from an input voltage range of 3.3 V to 20 V and provides up to 500 mA of output current. This adjustable version allows output voltages ranging from 1.22 V to 19 V via an external feedback divider. The device features low noise, reverse current protection, and programmable soft start for inrush current control.

Feature Summary

• Provides high power supply rejection and low noise with excellent line and load transient response using only a small ceramic output capacitor.
• Includes user-programmable precision undervoltage lockout and enable functions to facilitate the sequencing of multiple power supplies.
• Features foldback current-limit and thermal overload protection to ensure safe operation under fault conditions.

Applications

• Regulation of noise-sensitive applications such as ADC and DAC circuits
• Precision amplifiers, high frequency oscillators, clocks, and PLLs
• Communications and infrastructure systems
• Medical and healthcare equipment
• Industrial and instrumentation devices

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Confirm availability status directly with authorized distributors or the manufacturer, as supply constraints may apply. Ensure the component meets required environmental standards before integration into final designs.

Selection Notes

Select this adjustable variant when precise output voltage customization is required within the specified range. Consider the SOIC-8 package for standard surface-mount assembly. Evaluate thermal dissipation requirements based on the input-output voltage differential and maximum load current to ensure junction temperature limits are not exceeded.

Part Context

This component belongs to the ADP7105 series of low dropout regulators designed for high-performance analog and mixed-signal circuits. The series offers fixed and adjustable output options, providing flexibility for various system architectures requiring stable, low-noise power delivery from higher voltage rails.

Replacement Considerations

Consult official datasheets for pin-compatible alternatives within the same product family. Verify that any substitute maintains equivalent electrical characteristics, including input voltage range, output current capability, and package dimensions.