LM3280TLX-275/NOPB

Overview

The LM3280TLX-275/NOPB is a Texas Instruments PMIC featuring four outputs: one buck converter and three LDOs. It operates on a 2.7V to 5.5V supply with a 2MHz switching frequency. Output 1 provides 0.8V to 3.6V at 300mA. Outputs 2 and 3 are fixed at 2.85V and 2.75V respectively, both at 20mA. The device utilizes a 16-WFBGA (DSBGA) package and functions within a -30°C to 85°C temperature range.

Feature Summary

• Integrates a high-frequency buck regulator alongside multiple low-dropout linear regulators for efficient power management.
• Provides flexible voltage regulation through an adjustable buck output combined with dedicated fixed-voltage LDO channels.
• Designed for compact surface-mount applications utilizing a small footprint ball grid array package.

Applications

• Portable electronic devices requiring multi-rail power distribution
• Battery-powered systems needing efficient step-down conversion
• Embedded circuits utilizing mixed switching and linear regulation topologies

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm pinout compatibility and electrical characteristics. Ensure the ordering part number matches the exact voltage and current specifications required for your design. Cross-reference datasheet revisions to validate performance parameters before finalizing procurement decisions.

Selection Notes

Select this component when a single IC solution is needed to combine switching efficiency with linear regulation precision. Consider the 2MHz frequency for smaller external inductor sizes compared to lower-frequency alternatives. Evaluate the thermal performance of the DSBGA package relative to the total power dissipation of all four active channels.

Part Context

This part belongs to the LM3280 family of quad-output power management integrated circuits from Texas Instruments. These devices are engineered to consolidate multiple power rails into a single compact component, reducing board space and simplifying bill-of-materials for complex portable electronics.

Replacement Considerations

Consult official substitution guides for verified equivalents. Generic replacements may differ in pin configuration or internal topology. Verify that any substitute maintains the same output count and regulatory types.