LM2831YSDX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2831YSDX/NOPB is a high-frequency step-down DC-DC converter manufactured by Texas Instruments. It operates with an input voltage range of 3 V to 5.5 V and provides an adjustable output voltage from 600 mV to 4.5 V. The device delivers a maximum load current of 1.5 A. It features a fixed switching frequency of 550 kHz, which allows for the use of small external inductors and capacitors. The component supports shutdown functionality and operates within a junction temperature range of -40°C to +125°C. It is housed in a compact WSON-6 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a power switch capable of delivering up to 1.5 A of continuous load current for efficient voltage regulation.
• Utilizes a fixed 550 kHz switching frequency to minimize the size of passive components required for circuit design.
• Includes a dedicated shutdown pin to significantly reduce quiescent current consumption during standby modes.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered consumer electronics requiring efficient voltage conversion
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• General-purpose point-of-load regulation in compact industrial modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Y' against the official datasheet to confirm the exact switching frequency variant, as family members may differ. Ensure the 'NOPB' designation aligns with current RoHS compliance requirements. Confirm that the WSON-6 package thermal characteristics meet your PCB layout constraints. Cross-reference the manufacturer's latest product change notifications for any updates to the ordering information.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a moderate output current of 1.5 A is required alongside a compact footprint. The 550 kHz frequency offers a balance between efficiency and component size compared to lower frequency alternatives. Consider the input voltage range limits relative to your source supply. Evaluate the thermal performance of the WSON-6 package under maximum load conditions to ensure reliable operation within the specified temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2831 series of high-frequency buck converters from Texas Instruments. The series is designed for applications needing efficient power management from single-cell battery sources. The 'ZSD' and 'YSD' variants typically denote different switching frequencies within the same functional family. The 'X' suffix indicates reel packaging, while 'NOPB' signifies lead-free and halogen-free construction compliant with environmental standards.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the LM2831ZSD/NOPB and the LMR10515YSD/NOPB. Verify compatibility regarding switching frequency differences and package pinouts before substitution. The LM2831ZSDX is noted as obsolete, making the NOPB versions the primary active alternatives.