ADP7102ARDZ-2.5-R7

Overview

The ADP7102ARDZ-2.5-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 3.3 V to 20 V and provides up to 300 mA of output current. This specific variant features a fixed 2.5 V output with an initial accuracy of ±0.8%. The device delivers low noise performance, specified at 15 μV rms for fixed output versions, and achieves a power supply rejection ratio of 60 dB at 10 kHz when the output is set to 3.3 V. It maintains stability using small 1 μF ceramic output capacitors.

Feature Summary

• Provides reverse current protection to prevent backflow from the output to the input.
• Includes foldback current limit and thermal overload protection mechanisms.
• Features a user-programmable precision undervoltage lockout function via the enable pin.
• Integrates a digital power-good indicator to monitor output voltage health.

Applications

• Regulation for noise-sensitive applications such as ADC and DAC circuits
• Powering precision amplifiers, high frequency oscillators, clocks, and phase-locked loops
• Communications and infrastructure systems
• Medical and healthcare equipment
• Industrial and instrumentation devices

Procurement Notes

Verify the component against official Analog Devices documentation to confirm specifications. Ensure the ordering suffix matches the required package type and tape-and-reel configuration. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and revision status before procurement.

Selection Notes

Select this regulator for designs requiring high input voltages up to 20 V with low quiescent current consumption. It is suitable for battery-operated portable equipment due to its efficient ground current characteristics. Ensure the application utilizes appropriate ceramic capacitors to maintain stability and leverage the device's low noise capabilities.

Part Context

This component belongs to the ADP7102 series of low dropout linear regulators. The series offers various fixed output voltage options alongside an adjustable version. It is designed for high-performance analog and mixed-signal circuits, providing excellent line and load transient response while maintaining low noise and high power supply rejection ratios.

Replacement Considerations

Consult the official Analog Devices ordering guide for verified substitute part numbers within the ADP7102 family. Confirm that any replacement matches the required output voltage, package style, and electrical specifications before integration into the design.

FAQ

What is the typical output noise voltage for the fixed output versions?

The output noise voltage is typically 15 μV rms in the 10 Hz to 100 kHz bandwidth range, independent of the output voltage setting.

How does the ADP7102 handle overcurrent conditions?

The device incorporates foldback current limit and thermal overload protection to safeguard against excessive load currents and overheating.

Can the undervoltage lockout threshold be customized?

Yes, the ADP7102 features a user-programmable precision undervoltage lockout function facilitated by external resistors connected to the enable pin.