LP3923TL-VI/NOPB

Power Management - Specialized Overview

The LP3923TL-VI/NOPB is a fully integrated Power Management IC (PMIC) designed for cellular phone applications, specifically CDMA handsets. It features one high-efficiency synchronous buck regulator with an output current of 700 mA and an integrated Li-Ion battery charger with power FET, thermal regulation, and 28V overvoltage protection. The device includes six low-noise LDOs: three rated at 300 mA and four rated at 150 mA, including two LILO LDOs.

Power Management - Specialized Feature Summary

• Integrated Li-Ion battery charger with power FET, thermal regulation, and 28V overvoltage protection
• One high-efficiency synchronous buck regulator providing up to 700 mA output current
• Six low-noise LDOs comprising three 300 mA and four 150 mA regulators, including two LILO types

Power Management - Specialized Applications

• Cellular phone power management
• CDMA handset systems

Power Management - Specialized Procurement Notes

Verify the specific suffix (VI/NOPB) against the manufacturer's official ordering information to ensure correct package type and temperature range compatibility. Confirm that the component is lead-free and RoHS compliant as indicated by the NOPB designation. Cross-reference the datasheet revision to ensure all electrical characteristics match your design requirements before finalizing procurement.

Power Management - Specialized Selection Notes

Select this PMIC when designing for CDMA handsets requiring a compact solution with integrated charging and multiple regulated outputs. Ensure the input voltage range supports the intended battery chemistry and that the total load current does not exceed the combined capabilities of the buck regulator and LDOs. Verify thermal performance under maximum load conditions given the integrated power FET.

Power Management - Specialized Part Context

This component belongs to Texas Instruments' portfolio of power management solutions for mobile communication devices. It consolidates multiple power functions into a single package to reduce board space and simplify design complexity for cellular applications.

Power Management - Specialized Replacement Considerations

Check for direct pin-to-pin replacements within the LP3923 family or newer generations from Texas Instruments. Verify functional equivalence regarding output currents and regulatory types before substituting.