LM2831XSD/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2831XSD/NOPB is a high-frequency step-down DC-DC switching regulator manufactured by Texas Instruments, continuing the National Semiconductor product line. 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 output current of 1.5 A at a fixed switching frequency of 3 MHz. It features a WSON-6 package for surface mount installation and supports operation temperatures from -40°C to +125°C. Quiescent current is specified at 2.8 mA, and it includes shutdown functionality.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck converter topology for efficient power conversion
• High switching frequency enables the use of compact external inductors and capacitors
• Adjustable output voltage allows flexibility for various load requirements
• Thermal protection and shutdown pin enhance system reliability and power management

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Industrial control modules operating within standard voltage rails
• Communication infrastructure components needing stable low-noise power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'X' indicates the 3 MHz switching frequency variant distinct from other LM2831 models. Ensure the 'NOPB' suffix confirms lead-free and RoHS compliance status before finalizing procurement orders to meet regulatory standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for converting 3.3 V or 5 V inputs to lower adjustable voltages. The 3 MHz frequency is suitable for designs prioritizing small passive component size over absolute minimum efficiency peaks. Compare against the LM2831ZSD/NOPB if a different switching frequency is acceptable, or consider the LM2831XMFX/NOPB for alternative packaging needs.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2831 family of high-efficiency step-down converters. It shares core architectural similarities with the LM2831YSD/NOPB but differs in switching frequency specifications. The series is designed for applications demanding high power density and wide input voltage ranges in small form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2831ZSD/NOPB is a parameter-equivalent replacement with identical electrical characteristics. LM2831YSD/NOPB serves as a functional substitute but operates at a lower switching frequency of 550 kHz, potentially requiring larger external components.