LM2831XMFX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2831XMFX/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 up to 1.5 A of load current at a fixed switching frequency of 1.6 MHz. It features a low operating supply current of 2.8 mA and includes integrated power switches. The component is housed in a compact SOT-23-5 package and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side and low-side power switches for efficient buck conversion
• Fixed 1.6 MHz switching frequency enables the use of small external components
• Low quiescent current consumption enhances system efficiency during light loads
• Compact SOT-23-5 package facilitates space-constrained board designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring efficient voltage regulation
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Industrial control modules needing stable low-voltage power rails
• Consumer electronics with strict size limitations for power management ICs

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 that the required output voltage setting matches the external resistor divider network specifications in the datasheet. Check for moisture sensitivity level requirements if the component has been exposed to ambient conditions beyond its shelf life limits.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed high switching frequency is preferred over adjustable options to minimize passive component size. The SOT-23-5 package is suitable for applications where board real estate is limited compared to larger WSON packages. Ensure the input voltage source remains within the 3 V to 5.5 V operational window to maintain proper regulation and protection functions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2831 family of synchronous buck converters from Texas Instruments. It shares core architectural similarities with other variants like the LM2831ZSD/NOPB, which utilizes a WSON-6 package and offers a higher 3 MHz switching frequency. The XMFX designation specifically identifies the SOT-23-5 surface-mount variant optimized for standard automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2831ZSD/NOPB: Offers identical electrical performance but uses a WSON-6 package and operates at 3 MHz. LM2831YSD/NOPB: Similar functionality with a 550 kHz switching frequency in a WSON-6 package.