LM27313XMFX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM27313XMFX/NOPB is a current-mode boost converter from Texas Instruments, housed in a compact SOT-23-5 package. It features an integrated 30V DMOS FET switch capable of delivering up to 800mA output current. The device operates with a fixed switching frequency of 1.6MHz and supports an input voltage range of 2.7V to 14V. The adjustable output voltage spans from 4V to 28V. It includes internal compensation, cycle-by-cycle current limiting, and thermal shutdown protection. The component functions within a temperature range of -40°C to +125°C and offers a shutdown mode with low quiescent current.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage 30V DMOS FET switch within a minimal five-pin surface-mount footprint.
• Utilizes a fixed 1.6MHz switching frequency to enable the use of small external passive components.
• Incorporates internal compensation networks to simplify circuit design and reduce board space requirements.
• Provides comprehensive protection mechanisms including cycle-by-cycle current limiting and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring step-up conversion from single-cell lithium batteries
• LCD bias voltage generation circuits
• LED backlight driver power supplies
• USB-powered module power chains

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against project requirements. The NOPB designation indicates lead-free compliance. Confirm that the standard industrial grade version meets environmental specifications if automotive AEC-Q100 certification is not required for the application. Ensure ordering quantities align with available reel or cut tape packaging options provided by distributors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when board area is constrained but higher output voltages are necessary. Verify that the maximum load current does not exceed the 800mA switch limit under worst-case conditions. Consider the 1.6MHz frequency impact on inductor size versus efficiency trade-offs. Ensure the input voltage range covers the battery discharge curve for portable applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM27313 series of space-efficient boost converters. It shares core electrical characteristics with variants such as the LM27313XMF/NOPB, differing primarily in packaging format. Automotive-grade equivalents like the LM27313XQMFX/NOPB offer identical functionality with additional reliability certifications for vehicle environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct functional substitutes include the LM27313XMF/NOPB for non-reel packaging needs. For automotive applications requiring AEC-Q100 Grade 1 qualification, the LM27313XQMFX/NOPB serves as the certified alternative. Other family members may require verification of pin compatibility and thermal performance.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum voltage rating for the internal switch?

The internal DMOS FET switch has a breakdown voltage rating of 30V.

Does the device require external compensation components?

No, the LM27313XMFX/NOPB includes internal compensation, eliminating the need for external compensation networks.

What is the operating temperature range?

The device is rated for operation between -40°C and +125°C.