MAX1799EUP

Overview

The MAX1799EUP is a specialized power management IC designed for CDMA cellular and PCS system applications. It integrates one 300mA low-noise LDO and four 150mA low-noise LDOs. The device features 45µVRMS noise from 10Hz to 100kHz and provides greater than 60dB crosstalk isolation. It operates with a supply voltage range of +2.5V to +5.5V and has a supply current of 367µA. The component is housed in a 20-pin TSSOP package.

Feature Summary

• Integrates five low-noise linear regulators with varying current capabilities
• Provides high crosstalk isolation between regulator outputs
• Optimized for low-noise performance in sensitive RF applications

Applications

• CDMA cellular handset power supplies
• PCS system power management
• Li-ion battery powered devices

Procurement Notes

Verify the specific suffix (e.g., EUP vs ETP) against the official datasheet to ensure correct packaging and temperature rating. Confirm RoHS compliance status through manufacturer documentation. Check for obsolescence or lifecycle changes directly with Analog Devices. Ensure the source document matches the exact part number to avoid functional mismatches due to minor variant differences.

Selection Notes

Select this component for designs requiring multiple isolated, low-noise power rails from a single battery source. It is suitable for mobile phones where crosstalk between digital and analog sections must be minimized. Consider the thermal dissipation requirements for the integrated LDOs under maximum load conditions. Verify that the input voltage range aligns with the system's battery profile.

Part Context

This part belongs to the MAX1799 series of professional power management ICs. It is manufactured by Maxim Integrated, now part of Analog Devices. The series is targeted at portable communication devices requiring efficient and clean power distribution. The EUP designation indicates a specific tape-and-reel packaging format compatible with standard surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult the official Analog Devices website for current replacement recommendations or cross-reference lists. Direct pin-to-pin replacements may require verification of electrical parameter compatibility.