LM2731XMFX

Voltage Regulators - DC DC Switching Regulators Overview

The LM2731XMFX/NOPB is a step-up DC-DC converter from Texas Instruments, operating at a fixed switching frequency of 800 kHz. It features an integrated N-channel power switch rated for a maximum input voltage of 14 V and capable of delivering up to 2 A of output current. The device utilizes pulse width modulation control mode within a compact SOT-23-5 package. It supports an input voltage range from 2.7 V to 14 V and operates reliably across a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current N-channel power switch for efficient space-constrained designs
• Employs current-mode control with pulse width modulation for stable regulation
• Operates at a fixed 800 kHz switching frequency to minimize external component size

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring step-up conversion
• Cellular phones and personal digital assistants
• Handheld instruments and medical devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and electrical tolerances. Ensure the ordering part number matches the required package variant and temperature grade. Cross-reference the datasheet revision date to validate parameter accuracy before integration into final designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 800 kHz frequency is required for specific noise filtering or inductor sizing constraints. It is suitable for applications needing up to 2 A output current within a 14 V input limit. Consider thermal management requirements due to the small SOT-23-5 footprint when designing for high load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2731 family of boost converters, which are designed for portable electronics. It shares architectural similarities with other members like the LM2731YMF but differs in switching frequency specifications. The family focuses on providing high efficiency in minimal board space using integrated switches.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM2731YMFX/NOPB serves as a functional alternative within the same series, offering similar topology but differing in switching frequency characteristics. Verify pin compatibility and thermal performance when substituting.