LP3918TL-A/NOPB

Battery Chargers Overview

The LP3918TL-A/NOPB is a fully integrated lithium-ion battery charger and power management IC from Texas Instruments. It supports pre-charge, constant current, constant voltage, and maintenance charging modes. The device features an integrated FET, reverse current blocking diode, and sense resistor. It includes seven low-noise LDOs: two 300 mA, three 150 mA, and two 80 mA regulators. Operating supply voltage ranges from 3 V to 5.5 V with an output current of 300 mA. It operates between -40°C and +125°C in a DSBGA-25 package.

Battery Chargers Feature Summary

• Fully integrated Li-Ion battery charger with thermal regulation
• Supports USB charge mode at 100mA or 450mA
• Includes seven low noise LDOs for system power distribution
• Integrates internal FET, reverse current blocking diode, and sense resistor

Battery Chargers Applications

• Lithium-ion battery charging systems
• USB-powered portable devices
• Cellular phones and mobile communication equipment
• Portable consumer electronics requiring integrated power management

Battery Chargers Procurement Notes

Verify the specific suffix 'A' against the official datasheet to confirm pinout or electrical parameter variations compared to the standard LP3918TL variant. Confirm RoHS compliance status via manufacturer documentation. Check current lifecycle status as some LP3918 variants are marked NRND. Ensure the DSBGA-25 package availability aligns with design requirements.

Battery Chargers Selection Notes

Select this component when a single-chip solution for Li-Ion charging and multiple LDO outputs is required. The integrated FET and sense resistor reduce external component count. Verify that the 300 mA output current meets load requirements. Ensure the operating temperature range covers the application environment. Consider the DSBGA-25 package size constraints during PCB layout.

Battery Chargers Part Context

The LP3918 series is designed for portable applications requiring efficient power management. The TL/A suffix typically denotes specific tape-and-reel packaging or minor manufacturing revisions within the same functional family. This part integrates charging and regulation functions to simplify board space and reduce BOM complexity for mobile devices.

Battery Chargers Replacement Considerations

Check for LP3918TL/NOPB if the 'A' suffix does not indicate a critical functional difference. Verify compatibility with existing PCB footprints for the DSBGA-25 package. Ensure substitute parts support the same 300 mA output current and LDO configurations.