ADP5071AREZ

Overview

The ADP5071AREZ is a dual-output DC-DC switching regulator IC manufactured by Analog Devices Inc. It integrates boost and SEPIC topologies to generate positive and negative bipolar rails from a single input source. The device operates with an input voltage range of 2.85V to 15V. It provides two adjustable outputs, delivering up to 1.2A on the positive rail and 2A on the negative rail. Output voltages are adjustable from 0.8V/1.6V minimums up to ±39V maximums. The IC supports switch frequencies of 1.2MHz or 2.4MHz and is housed in a 20-TSSOP package with an exposed pad.

Feature Summary

• Generates independent positive and negative output rails from a single supply input
• Integrates boost and SEPIC converter topologies for flexible power conversion
• Supports high current delivery capabilities across dual channels
• Features adjustable switching frequency options for efficiency optimization

Applications

• Powering bipolar analog-to-digital converters (ADCs)
• Supplying dual-rail requirements for digital-to-analog converters (DACs)
• Providing bias voltages for operational amplifiers (AMPs)
• Precision test and measurement systems requiring bipolar supplies

Procurement Notes

Verify the specific suffix 'AREZ' corresponds to the 20-TSSOP package variant when ordering. Confirm that the required output current and voltage ranges align with the component's specified limits. Ensure thermal management strategies account for the exposed pad design in the selected footprint. Cross-reference the datasheet for any specific handling or moisture sensitivity precautions relevant to the package type.

Selection Notes

Select this component when a single-input source must drive both positive and negative loads efficiently. Consider the 1.2A and 2A current ratings against peak load demands. Evaluate the 1.2MHz versus 2.4MHz frequency options based on passive component size constraints versus electromagnetic interference requirements. Verify compatibility with the target control loop compensation network for stability.

Part Context

This part belongs to the ADP507x family of dual-channel DC-DC regulators designed for precision applications. It serves as a compact alternative to discrete solutions for generating bipolar supplies. The series is often paired with high-performance data converters to simplify system architecture. It replaces older multi-component designs by integrating multiple converter stages into a single monolithic IC.

Replacement Considerations

Check for pin-compatible alternatives within the same manufacturer portfolio if package availability is constrained. Verify that substitute parts support the same ±39V output capability and dual-channel current specifications. Ensure replacement components maintain similar switching frequency ranges to preserve existing filter designs.