MAX1821EUB+

Overview

The MAX1821EUB+ is a WCDMA cellular phone DC-DC buck regulator manufactured by Analog Devices Inc./Maxim Integrated. It features a 600mA output current capability and operates in a 10-pin µMAX package. The device utilizes pulse width modulated (PWM) technology for efficient voltage conversion, designed specifically for low dropout performance in mobile communication applications.

Feature Summary

• Integrated 600mA buck regulator optimized for WCDMA cellular phones
• Pulse width modulated (PWM) operation for stable voltage conversion
• Low dropout design suitable for battery-powered mobile devices

Applications

• WCDMA cellular phone power management
• Mobile communication device voltage regulation
• Battery-powered portable electronics

Procurement Notes

Verify component authenticity through authorized distributors due to limited supply status. Confirm package integrity upon receipt as the µMAX form factor requires careful handling. Check datasheet revisions for any functional updates before integration into final designs.

Selection Notes

Select this component for applications requiring a compact, high-efficiency buck converter with 600mA capacity. Ensure input voltage ranges match the system requirements and thermal constraints are addressed within the small µMAX footprint. Validate compatibility with WCDMA power profiles.

Part Context

Part of the Maxim Integrated line of specialized PMICs for mobile communications. Designed to meet the stringent power efficiency and size constraints of third-generation wireless handsets. Complements other RF and baseband power solutions in complete mobile platform designs.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family or newer generations from Analog Devices. Verify electrical parameters such as output current and switching frequency when substituting.