MAX843ISA+

Overview

The MAX843ISA+ is a regulated charge pump designed to generate a stable -2V output from a positive input supply ranging from 2.5V to 10V. Operating in an 8-SOIC package, this component provides a single output channel with low noise characteristics suitable for precision applications. It functions as a switching voltage regulator optimized for generating negative bias voltages efficiently.

Feature Summary

• Generates a regulated -2V output from positive input supplies
• Low-noise performance suitable for sensitive analog circuits
• High-efficiency charge pump topology

Applications

• GaAsFET bias generation
• Mobile phone transmitter power management
• Negative voltage rail creation for mixed-signal ICs

Procurement Notes

Verify the specific suffix 'ISA+' against the manufacturer's official datasheet to confirm pinout and electrical specifications. Ensure the component matches the required operating temperature range of -25°C to +85°C. Confirm RoHS compliance status and check for any recent product change notices or obsolescence announcements prior to finalizing procurement orders.

Selection Notes

Select this component when a compact, low-noise solution is required to derive a precise -2V rail from standard positive logic supplies. The fixed -2V output simplifies design complexity compared to adjustable regulators. Consider the 8-SOIC footprint constraints and thermal dissipation requirements within the target enclosure space during the initial hardware layout phase.

Part Context

This device belongs to the Maxim Integrated charge pump family, specifically engineered for portable electronics and RF applications requiring clean negative bias. It complements other power management solutions by providing dedicated voltage inversion capabilities without the need for complex inductor-based buck-boost converters.

Replacement Considerations

Consult the manufacturer's official cross-reference list for direct replacements. Verify that any substitute part maintains identical -2V regulation, input voltage compatibility, and package dimensions to ensure board-level interchangeability.