ADP7102ARDZ-5.0-R7

Overview

The ADP7102ARDZ-5.0-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc., providing a fixed 5 V output with up to 300 mA of current capability. It operates within an input voltage range of 3.3 V to 20 V and features a typical quiescent current of 750 μA at full load. The device delivers high power supply rejection ratio performance, achieving 60 dB at 10 kHz for the 5 V version. It incorporates reverse current protection, foldback current limiting, and thermal overload protection. Stability is maintained using small ceramic capacitors, specifically requiring a minimum capacitance greater than 0.7 μF.

Feature Summary

• Provides stable regulation for noise-sensitive analog and mixed-signal circuits using only small ceramic output capacitors.
• Includes a digital power-good indicator to monitor output voltage health and facilitate system sequencing.
• Features user-programmable precision undervoltage lockout via the enable pin for flexible multi-supply management.
• Offers reverse current protection and foldback current limiting to safeguard against fault conditions.

Applications

• Regulation for ADC and DAC circuits
• Precision amplifier power supplies
• High frequency oscillator and clock circuits
• Phase-locked loops in communications infrastructure

Procurement Notes

Verify the specific suffix R7 indicates tape and reel packaging when sourcing components. Confirm that the ARDZ designation corresponds to the industrial temperature range and SOIC package variant required for your design. Ensure compatibility with standard surface-mount assembly processes for the 8-lead narrow body SOIC footprint.

Selection Notes

Select this component when a fixed 5 V rail is required from inputs up to 20 V with moderate current demands. Consider the 750 μA quiescent current draw for battery life calculations under full load. Evaluate thermal dissipation requirements based on the difference between input voltage and the 5 V output at maximum load currents.

Part Context

This part belongs to the ADP7102 family of high-voltage, low-noise LDOs from Analog Devices. The series supports various fixed output voltages including 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 5 V, and 9 V, alongside an adjustable version. The family shares common architectural features such as low noise performance and stability with small ceramic capacitors across different package options.

Replacement Considerations

Direct substitutes include other ADP7102 variants with different fixed output voltages or the adjustable ADP7102 model if external feedback resistors are utilized. Cross-family replacements require matching input voltage ranges, current capabilities, and package dimensions while verifying pinout compatibility.