LM25017SD/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25017SD/NOPB is a high-voltage synchronous buck converter manufactured by Texas Instruments. It operates with an input voltage range of 7.5V to 48V and provides a fixed output voltage of 1.225V at up to 600mA. The device integrates a 120mΩ high-side N-channel MOSFET and a 90mΩ low-side N-channel MOSFET, eliminating the need for external Schottky diodes. It features a fixed switching frequency of 225kHz and includes comprehensive protection mechanisms such as cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power MOSFETs for efficient synchronous rectification without external diodes
• Supports wide input voltage ranges suitable for industrial and automotive bus systems
• Includes built-in cycle-by-cycle current limiting and thermal shutdown for robust operation under fault conditions

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SDX' or 'SD' against the datasheet to confirm package type (WSON-8) and tape/reel specifications. Ensure the 'NOPB' designation confirms lead-free and RoHS compliance status required for your assembly process. Cross-reference the manufacturer's latest documentation for any pin-compatible alternatives or updated environmental declarations before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.225V output is required from a 48V bus system. It is suitable for applications needing moderate current up to 600mA with high efficiency due to synchronous rectification. Consider the WSON-8 package for space-constrained designs. Evaluate thermal performance based on the expected load current and ambient temperature conditions within the -40°C to +125°C operating range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM25017 family of high-voltage synchronous buck converters. It is designed for applications requiring reliable step-down conversion from higher voltage rails. The device shares architectural similarities with other members in the series but is distinguished by its fixed output voltage option and specific packaging configuration.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM25017 variants with different output voltages or packages if the fixed 1.225V requirement changes. Verify pin compatibility with alternative high-voltage buck controllers from Texas Instruments or other manufacturers if supply constraints exist.