ADP7102ARDZ-1.5-R7

Overview

The ADP7102ARDZ-1.5-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc., providing a fixed 1.5 V output with up to 300 mA of current capability. It operates from an input voltage range of 3.3 V to 20 V and features low noise performance of 15 μV rms. The device includes reverse current protection, foldback current limit, thermal overload protection, and a power-good indicator. It is housed in an 8-lead SOIC package.

Feature Summary

• Provides stable regulation for high-performance analog and mixed-signal circuits with low noise and high power supply rejection.
• Includes programmable undervoltage lockout and enable functions for precise power sequencing.
• Features integrated safety mechanisms such as reverse current protection, foldback current limiting, and thermal shutdown.

Applications

• Regulation for noise-sensitive applications including 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 specific ordering suffix to confirm the fixed 1.5 V output voltage variant. Ensure compatibility with the required 8-lead SOIC package type. Confirm that the application meets the minimum input voltage requirement of 3.3 V. Check datasheet specifications for thermal resistance values relevant to your PCB layout to ensure junction temperature limits are not exceeded under maximum load conditions.

Selection Notes

Select this component when a fixed 1.5 V rail is required from higher input voltages up to 20 V. It is suitable for battery-operated portable equipment due to its low quiescent current consumption. Consider the 15 μV rms noise specification for sensitive signal paths. Ensure the design accommodates the necessary input and output capacitance requirements for stability.

Part Context

This part belongs to the ADP7102 family of 20 V, 300 mA low noise CMOS LDOs. The family offers multiple fixed output voltage options alongside an adjustable version. It is designed for applications requiring excellent line and load transient response with minimal external components.

Replacement Considerations

Other variants within the ADP7102 series offer different fixed output voltages (e.g., 1.8 V, 3.3 V) or adjustable configurations. Verify pinout and package compatibility before substitution.

FAQ

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

The output noise voltage is typically 15 μV rms over a frequency range of 10 Hz to 100 kHz.

Does the ADP7102 support reverse current flow?

Yes, the device includes reverse current protection to prevent current from flowing back into the input terminal.