LM27403SQE/NOPB

DC DC Switching Controllers Overview

The LM27403SQE/NOPB is a high-performance synchronous buck controller from Texas Instruments, designed for point-of-load conversion. It features a fixed switching frequency of 1.05 MHz and supports output currents up to 25 A. The device accepts input voltages between 3 V and 20 V, regulating outputs from 600 mV to 19 V with a maximum duty cycle of 93%. Operating within a temperature range of -40°C to +125°C, it utilizes a WQFN-24 package.

DC DC Switching Controllers Feature Summary

• Integrates temperature-compensated DCR current sensing for accurate load line regulation.
• Supports remote bipolar junction transistor (BJT) temperature compensation for inductor current sensing.
• Optimizes solution size by minimizing total footprint in high-power applications.

DC DC Switching Controllers Applications

• Communications infrastructure power supplies
• Industrial equipment power modules
• Medical device power systems

DC DC Switching Controllers Procurement Notes

Verify the complete part number including suffixes such as NOPB against official manufacturer documentation to ensure correct packaging and material specifications. Confirm that the WQFN-24 package variant matches the design requirements. Cross-reference the datasheet revision date to validate technical parameters before integration into production designs.

DC DC Switching Controllers Selection Notes

Select this component when designing non-isolated DC/DC step-down converters requiring high efficiency above 95 percent at 25 amperes from a 12-volt input. Ensure the application demands fast transient response capabilities. Verify compatibility with WEBENCH design tools for simplified circuit configuration and optimization of the power stage components.

DC DC Switching Controllers Part Context

This device belongs to the LM27403 series of switching controllers under the PMIC category. It is specifically engineered as an analog DC/DC step-down controller. The product is distinct from integrated regulators, functioning instead as a controller requiring external MOSFETs. Evaluation modules like the LM27403EVM are available for performance validation.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not identified in the provided source data. Consult official manufacturer substitution guides for verified alternatives.