MAX720CSE

Overview

The MAX720CSE is a specialized power management integrated circuit designed for palmtop computers and flash memory applications. It functions as a switching regulator with voltage-mode control, capable of delivering up to 1A output current at a maximum switching frequency of 500kHz. The device integrates two LDO regulators, providing outputs of 3.3V, 5V, and 12V to support various system requirements. Constructed in CMOS technology, it operates within an ambient temperature range of 0°C to 70°C and is housed in a 16-pin SOIC surface-mount package.

Feature Summary

• Integrates a high-efficiency switching regulator with dual low-dropout linear regulators for comprehensive power management
• Supports multiple fixed output voltages including 3.3V, 5V, and 12V for diverse component needs
• Utilizes voltage-mode control architecture for stable regulation under varying load conditions

Applications

• Palmtop computer power supply systems
• Flash memory power regulation circuits
• Portable electronic devices requiring multi-voltage rails

Procurement Notes

Verify the specific suffix 'CSE' corresponds to the commercial temperature grade and 16-SOIC package configuration. Confirm that the manufacturer designation aligns with Analog Devices Inc./Maxim Integrated specifications. Ensure compatibility with existing board layouts regarding pin assignments and thermal dissipation requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring a combined switching and linear regulation solution for portable electronics. It is suitable for applications needing 3.3V, 5V, and 12V rails from a single input source. Consider the 500kHz switching frequency and 1A current capability against system efficiency and size constraints. Verify that the commercial temperature range meets the operational environment standards.

Part Context

This part belongs to the Maxim Integrated PMIC family, specifically tailored for mobile computing and memory power solutions. It replaces older discrete regulator designs by integrating switching and LDO stages into a single CMOS chip. The MAX720 series is historically associated with early palmtop and handheld device architectures, offering a compact alternative to multi-component power boards.

Replacement Considerations

Check for direct cross-references within the Maxim/Analog Devices portfolio. Verify pin-to-pin compatibility if substituting with other MAX720 variants or newer generations. Ensure electrical parameters such as switching frequency and output currents match the original design requirements.