LM3280TL-290/NOPB

Overview

The LM3280TL-290/NOPB is a multi-functional Power Management IC (PMIC) designed for low-power handheld applications, including cellular phones. It integrates one adjustable step-down DC-DC converter and three Low Dropout (LDO) linear regulators. The device operates with a switching frequency of 2MHz and is housed in a 16-TuSMD package. It supports an operating temperature range from -40°C to +125°C, suitable for industrial and automotive environments.

Feature Summary

• Integrates one adjustable buck converter and three LDOs for comprehensive power management
• Optimized for low-power handheld and RF power applications
• Supports wide operating temperature ranges for industrial use

Applications

• Cellular phone power management
• Low-power handheld devices
• RF power management systems

Procurement Notes

Verify the specific suffix '290' against official National Semiconductor or Texas Instruments documentation to confirm output voltage configurations. Ensure the 16-TuSMD package matches your PCB footprint requirements. Confirm that the component meets the required industrial temperature specifications for your target application environment before finalizing procurement.

Selection Notes

Select this component when a single IC solution is needed to manage multiple voltage rails in space-constrained designs. It is appropriate for systems requiring both efficient switching regulation and precise linear regulation for sensitive RF circuits. Consider the 2MHz switching frequency for smaller external passive component sizes compared to lower-frequency alternatives.

Part Context

This part belongs to the LM3280 family of PMICs originally developed by National Semiconductor, now part of Texas Instruments. These units are specifically engineered to reduce board space and bill of materials count in mobile communication devices by combining switching and linear regulation technologies into a single compact package.

Replacement Considerations

Check for LM3280TLX-290/NOPB as a potential tape-and-reel variant. Verify pin compatibility and electrical parameters with any cross-reference parts from other manufacturers to ensure functional equivalence in RF power management applications.