ADPL42005ARDZ-1.8-R7

Overview

The ADPL42005ARDZ-1.8-R7 is a single-channel positive linear regulator from Analog Devices Inc., designed for high-performance analog and mixed-signal circuits. It operates within an input voltage range of 4V to 20V and delivers a maximum output current of 500mA. The device provides a fixed output voltage of 1.8V with low noise characteristics, specifically 32µVrms. It features a power supply rejection ratio (PSRR) of 58dB at 10kHz and maintains an initial accuracy of ±0.8%. The component includes user-programmable precision undervoltage lockout, a power good indicator, and comprehensive protection mechanisms such as reverse current protection, foldback current limiting, and thermal overload protection.

Feature Summary

• Advanced proprietary architecture enabling high power supply rejection and low noise performance suitable for sensitive applications
• Integrated digital power good output allowing system monitors to verify normal output voltage operation
• User-programmable precision undervoltage lockout and enable functionality for precise multi-supply sequencing control
• Multiple built-in protection features including reverse current protection, foldback current limiting, and thermal overload shutdown

Applications

• Noise-sensitive analog and mixed-signal circuitry
• Analog-to-digital converter (ADC) and digital-to-analog converter (DAC) power supplies
• Precision amplifier biasing
• High-frequency oscillators and clock circuits
• Communication infrastructure and industrial instrumentation systems

Procurement Notes

Verify the specific suffix 'R7' against official manufacturer documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the part number matches the exact voltage grade and package type required for your design. Cross-reference the datasheet revision date to confirm compliance with current environmental standards and pinout configurations before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring a stable 1.8V rail from higher input voltages up to 20V. It is appropriate for applications demanding low output noise below 32µVrms and high PSRR. Consider its 500mA current capability and compact SOIC-8 or LFCSP packaging constraints. Evaluate the need for programmable UVLO and power good signaling for complex power management sequences in medical or industrial equipment.

Part Context

This part belongs to the ADPL42005 series of low-dropout linear regulators manufactured by Analog Devices Inc. The series is engineered for robust performance in demanding environments, offering both fixed and adjustable output options. It complements other power management solutions by providing high precision and reliability for critical signal paths in advanced electronic systems.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Direct replacements must match the 1.8V fixed output, 500mA current rating, and compatible package footprint. Verify that any substitute maintains equivalent noise, PSRR, and protection feature sets.