MAX845CSA

Power Management - Specialized Overview

The MAX845CSA is an isolated transformer driver designed for ultra-thin PCMCIA cards and space-sensitive applications. It drives a low-profile center-tapped transformer primary from a single +5V or +3.3V DC supply, providing isolated positive or negative voltages up to 750mW. The device features a minimum switching frequency of 450kHz and includes a low-power shutdown mode consuming only 5µW. Packaged in an 8-pin SOIC, it ensures break-before-make action between internal N-channel power switches.

Power Management - Specialized Feature Summary

• Drives low-profile center-tapped transformers for isolated power generation
• Operates from single +5V or +3.3V input supplies
• Includes low-power shutdown mode for minimal standby consumption
• Ensures safe operation with internal break-before-make switch control

Power Management - Specialized Applications

• PCMCIA modem cards
• Isolated data acquisition systems
• Noise-immunity communications interfaces
• Medical equipment requiring galvanic isolation

Power Management - Specialized Procurement Notes

Verify the specific suffix 'CSA' corresponds to the 8-pin SOIC package and commercial temperature range. Confirm RoHS compliance status as historical Maxim products may vary. Check for availability of the evaluation kit MAX845EVKIT-MM if prototyping is required. Ensure the design supports the 750mW output limit and 450kHz minimum frequency constraints.

Power Management - Specialized Selection Notes

Select this component when space constraints require an ultra-thin isolated power solution for PCMCIA form factors. It is suitable for applications needing isolation between ground domains or noise-immune communication bridging. Consider the 750mW power ceiling and the requirement for external center-tapped transformers when defining system architecture.

Power Management - Specialized Part Context

The MAX845 series serves as a specialized isolated DC-to-DC converter driver within the Maxim Integrated portfolio. It addresses the need for compact power solutions in thin electronic devices like PCMCIA cards. The CSA variant specifically denotes the standard plastic small-outline package configuration used in these space-constrained industrial and consumer applications.

Power Management - Specialized Replacement Considerations

Direct substitutes include other parts from the MAX845 family such as the MAX845ESA (SOIC) or MAX845MU (µMAX). Verify pin compatibility and thermal performance when swapping packages. No cross-model functional replacements are documented; stick to the same topology.