ADP5070AREZ-R7

Overview

The ADP5070AREZ-R7 is a dual-channel DC-DC switching regulator from Analog Devices, designed to generate independently regulated positive and negative power rails. It operates within an input voltage range of 2.85 V to 15 V and delivers output currents of 600 mA on the positive channel and 1 A on the negative channel. The device supports adjustable outputs starting from 0.8 V and 1.6 V, with maximum voltages reaching ±39 V. It utilizes boost and SEPIC topologies at switch frequencies of 1.2 MHz or 2.4 MHz. Packaged in a 20-TSSOP with exposed pad, it functions reliably across temperatures from -40°C to +125°C.

Feature Summary

• Generates independent positive and negative voltage rails for bipolar applications
• Integrates dual high-performance DC-DC regulators in a compact package
• Supports flexible topology configurations including boost and SEPIC modes

Applications

• Powering bipolar ADC/DAC/AMP circuits
• Providing dual-rail supplies for programmable logic controllers
• Generating bias voltages for instrumentation amplifiers

Procurement Notes

Verify the specific suffix 'R7' corresponds to the required tape and reel packaging configuration. Confirm that the 'A' grade designation meets the necessary performance specifications for the target application environment. Ensure compatibility with the EVAL-ADP5070 development kit if prototyping is required. Cross-reference the 20-TSSOP-EP footprint against the PCB layout guidelines provided in the official datasheet to guarantee proper thermal dissipation and electrical connectivity.

Selection Notes

Select this component when dual independent rails are required from a single IC source. Compare the 600 mA/1 A current distribution against the ADP5071 variant which offers higher symmetric current capabilities. Consider the 2.85 V minimum input requirement relative to the system's available supply voltage. Evaluate the need for adjustable output ranges versus fixed voltage alternatives within the broader PMIC portfolio.

Part Context

This part belongs to the ADP5070 series of uPMU devices focused on bipolar signal chain support. It complements other regulators like the ADP5073 by providing dual polarity rather than inversion. The series targets precision analog applications requiring clean, synchronized power rails. Development is supported by dedicated evaluation boards such as the EVAL-ADP5070.

Replacement Considerations

Public confirmed substitute part numbers: ADP5071AREZ-R7.