LM25019SDX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25019SDX/NOPB is a synchronous step-down switching regulator from Texas Instruments, designed for high-voltage input applications. It features a wide input voltage range of 7.5V to 48V and delivers a maximum output current of 100mA. The device integrates a 100mΩ high-side N-channel MOSFET and utilizes constant on-time (COT) control architecture for fast transient response. Operating at a switch frequency adjustable up to 1MHz, it supports output voltages from 1.225V to 40V. Packaged in an 8-pin WSON with exposed thermal pad, it operates over a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 100mΩ high-side N-channel power MOSFET for efficient power conversion.
• Utilizes constant on-time control topology to ensure rapid load transient response.
• Features integrated soft-start circuitry to limit inrush current during startup.
• Includes comprehensive protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Automotive electronics systems
• Distributed power architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SDX' indicates tape-and-reel packaging when ordering. Confirm that the component meets RoHS compliance standards as indicated by the 'NOPB' designation. Ensure design compatibility with the required input voltage range and thermal management requirements for the 8-WSON package before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a compact solution with high-voltage tolerance and moderate output current. Compare against the LM5019 if input voltages exceed 48V. Consider the fixed-frequency operation and external compensation requirements typical of COT regulators. Evaluate thermal performance based on the exposed pad layout and ambient operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM25019 family of synchronous buck regulators. It shares architectural similarities with the LM5019 but is rated for lower input voltages. The SDX variant specifically denotes the surface-mount WSON package configuration. It serves as a bridge between low-power LDOs and higher-current switching controllers in mid-range power applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM25019SDE/NOPB offers identical electrical performance in a different package variant. LM5019SDX/NOPB provides similar functionality but supports higher input voltages up to 100V. Verify pinout compatibility and thermal characteristics when substituting these alternatives.