MAX857CUA

Overview

The MAX857CUA is a step-up DC-DC converter manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-pin USOP package. It operates with an input voltage range of 0.8V to 6V and provides an adjustable output voltage between 2.7V and 6V. The device delivers an output current of 150mA at a fixed switching frequency of 500kHz. It supports operation within a temperature range of -40°C to +85°C and features a shutdown mode for power conservation.

Feature Summary

• Boost topology enables voltage step-up from low input sources
• Adjustable output voltage allows flexible system design
• Integrated shutdown mode reduces quiescent current consumption

Applications

• Battery-powered portable electronics
• Single-cell lithium-ion battery systems
• General purpose step-up power supplies

Procurement Notes

Verify the specific suffix 'CUA' against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with required input/output specifications before integration. Cross-reference datasheet revisions for any pinout or electrical characteristic updates.

Selection Notes

Select this component when a compact boost converter is needed for single-cell battery applications. Consider the 150mA current limit and 500kHz frequency for filtering requirements. Verify that the USOP package fits the PCB layout constraints and thermal management needs.

Part Context

This part belongs to the MAX857 series of high-efficiency step-up converters. It is designed for space-constrained applications requiring efficient power management from low-voltage sources. The series offers various package options and output configurations to suit different system requirements.

Replacement Considerations

Direct substitutes include other Maxim integrated step-up converters with similar current ratings and input ranges. Verify functional equivalence regarding switching frequency and shutdown current. Check for package compatibility if physical footprint replacement is required.