ADP1073AR

Overview

The ADP1073AR is a micropower DC-DC converter from Analog Devices, designed for step-up or step-down operation with an input voltage range of 1.0 V to 30 V. It features an internal 1 A power switch and operates in both buck and boost modes. The device supports fixed output voltages including 3.3 V, 5 V, and 12 V, as well as adjustable configurations. Key electrical characteristics include a ground current of 100 mA and on-chip user-adjustable current limit protection. Packaged in an 8-Lead SOIC (SO-8), it requires very few external components for implementation.

Feature Summary

• Operates in step-up or step-down mode from a single supply voltage starting at 1.0 V
• Integrates a 1 A internal power switch for compact design
• Includes low battery detector and user-adjustable current limit protection
• Requires minimal external components for circuit implementation

Applications

• Single-cell to 5 V converters
• Laptop and palmtop computers
• Portable instruments and handheld inventory computers
• 4 mA–20 mA loop powered instruments
• Battery backup supplies

Procurement Notes

Verify the specific suffix 'AR' corresponds to the SO-8 package and commercial temperature grade when sourcing. Confirm availability status as older generation parts may have limited stock or be subject to discontinuation notices. Ensure compatibility with required output voltage variants (fixed 3.3V/5V/12V or adjustable) during procurement planning.

Selection Notes

Select this component for applications requiring wide input voltage flexibility from a single cell source. The internal 1 A switch suits moderate load requirements without external pass transistors. Consider the 100 mA ground current for battery life calculations in portable devices. Verify that the SO-8 package fits the thermal and spatial constraints of the target PCB layout.

Part Context

The ADP1073 belongs to a family of micropower switching regulators by Analog Devices. It serves as a versatile solution for converting battery voltages to stable logic levels. The AR designation indicates the surface-mount SOIC-8 package variant, distinguishing it from through-hole DIP options within the same functional family.

Replacement Considerations

Check for direct pin-compatible successors in the ADP11xx series or newer micropower regulator families. Verify if updated versions offer improved efficiency or lower quiescent current while maintaining the 1.0 V to 30 V input range.