LM2831YMFX

Voltage Regulators - DC DC Switching Regulators Overview

The LM2831YMFX/NOPB is a synchronous step-down DC-DC converter from Texas Instruments, designed for high-efficiency power management in compact applications. It operates with an input voltage range of 3 V to 5.5 V and delivers a maximum output current of 1.5 A. The device features a fixed switching frequency of 550 kHz, enabling the use of small external components. The adjustable output voltage ranges from 600 mV to 4.5 V. It is housed in a SOT-23-5 package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency and reduced component count
• Fixed 550 kHz switching frequency allows for compact passive component selection
• Adjustable output voltage capability within specified limits
• Compact SOT-23-5 surface-mount packaging for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient battery-powered regulation
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Industrial control modules needing stable low-voltage power rails
• Communication equipment requiring compact DC-DC conversion solutions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number includes the /NOPB suffix to ensure lead-free compliance and RoHS adherence. Confirm the specific suffix 'Y' corresponds to the required temperature grade and marking code. Check moisture sensitivity levels and recommended reflow profiles during assembly planning. Ensure ordering documentation matches the exact manufacturer designation to avoid substitution errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact footprint is critical due to the SOT-23-5 package size. Choose this model over higher-frequency variants if electromagnetic interference (EMI) constraints favor a lower switching frequency. Consider the 1.5 A current limit against peak load requirements. Verify that the 3 V minimum input voltage aligns with the source supply characteristics under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2831 family of synchronous buck converters. It shares functional similarities with other members like the LM2831ZSD but differs in switching frequency and package type. The family is designed for general-purpose power management in portable and industrial applications, offering a balance between performance and physical size.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers include LM2831YMFX/NOPB variations. Cross-reference pinouts and electrical specifications carefully before substitution.