LM3280TLX/NOPB

Overview

The LM3280TLX/NOPB is a quad output power management IC from Texas Instruments, integrating one buck converter and three low-dropout (LDO) regulators. It operates within an input voltage range of 2.7V to 5.5V. The switching regulator provides up to 300mA at adjustable voltages between 0.8V and 3.6V with a fixed 2MHz switching frequency. The LDO outputs deliver 20mA each, with specific fixed outputs at 2.85V and 2.75V. Packaged in a 16-DSBGA, it supports industrial temperatures from -30°C to 85°C.

Feature Summary

• Integrates a high-frequency buck converter with three dedicated LDOs for compact multi-rail designs
• Provides precise fixed voltage outputs for memory and logic interfaces alongside an adjustable main rail
• Optimized for low noise and fast transient response suitable for sensitive digital loads

Applications

• Portable consumer electronics requiring multiple supply rails
• Mobile communication devices and smartphones
• Embedded systems with mixed-signal requirements

Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance as per manufacturer specifications. Confirm the 'TLX' designation indicates tape and reel packaging for automated assembly. Ensure the operating temperature range meets the specific environmental constraints of the target application before finalizing procurement.

Selection Notes

Select this component when a single solution is needed to replace multiple discrete regulators. It is suitable for designs where board space is limited and efficiency from the buck converter is required for the primary load. Verify that the total current demand across all four outputs does not exceed thermal limits for the DSBGA package.

Part Context

This device belongs to the LM3280 family of integrated power management solutions. It consolidates switching and linear regulation technologies into a single chip. The NOPB suffix denotes non-pb (lead-free) construction, aligning with modern environmental standards for electronic components manufactured by Texas Instruments.

Replacement Considerations

Check for direct substitutes within the LM3280 series or other TI quad-output PMICs. Verify pin compatibility and electrical parameter overlaps before substituting. Cross-reference datasheets to ensure equivalent thermal performance and output configurations.