LM2831YMFX/NOPB

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 up to 1.5 A of output current. The device features a fixed switching frequency of 550 kHz, enabling the use of small external components. It provides an adjustable output voltage between 600 mV and 4.5 V. Integrated protections include overcurrent protection and thermal shutdown. The component functions within a junction temperature range of -40°C to +125°C and consumes only 2.8 mA of quiescent current during operation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology ensures high efficiency across load conditions
• Integrated current limit and thermal shutdown protect against overload
• Compact SOT-23-5 package minimizes board space requirements
• Fixed 550 kHz switching frequency reduces passive component size

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered consumer electronics
• Embedded systems requiring efficient voltage regulation
• Industrial control modules with limited power budgets
• Communication equipment power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the suffix /NOPB to ensure lead-free compliance and specific tape-and-reel packaging configuration. Confirm the SOT-23-5 package variant matches your PCB footprint design. Check manufacturer documentation for moisture sensitivity level handling requirements prior to assembly. Ensure input and output capacitor selections align with the datasheet recommendations for stability at the 550 kHz operating frequency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Choose this component when a compact solution is required for stepping down 3 V to 5.5 V sources to lower logic voltages. The fixed 550 kHz frequency offers a balance between efficiency and component size compared to higher frequency alternatives. Consider the 1.5 A current capability against peak load demands. Evaluate the thermal performance in the SOT-23-5 package if ambient temperatures approach the upper operational limit of 125°C.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2831 family of synchronous step-down converters. It shares core architectural similarities with variants like the LM2831YSD/NOPB, which utilizes a WSON-6 package but maintains identical electrical characteristics. The YMFX designation specifically identifies the SOT-23-5 surface-mount package option. This family targets applications demanding high efficiency in minimal footprints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2831YSD/NOPB serves as a pin-compatible alternative with identical electrical specifications but utilizes a WSON-6 package instead of SOT-23-5. Verify mechanical footprint compatibility before substitution. Other LM2831 variants may offer different switching frequencies or package types while maintaining similar performance profiles.