LM25575MHX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25575MHX/NOPB is a SIMPLE SWITCHER® step-down switching voltage regulator manufactured by Texas Instruments. It integrates a high-voltage N-channel MOSFET and operates from an input voltage range of 6 V to 42 V. The device delivers up to 1.5 A of output current with an adjustable output voltage range of 1.225 V to 40 V. It supports fixed switching frequencies between 50 kHz and 1000 kHz, enabling the use of small external components. The controller utilizes current-mode control for fast transient response and includes comprehensive protection features such as cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage N-channel power switch for simplified design
• Supports buck and inverting topologies with adjustable output voltage
• Features current-mode control architecture for improved stability
• Includes built-in thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• Distributed power systems in automotive applications
• Battery-powered systems requiring efficient step-down conversion
• General-purpose DC/DC conversion for embedded electronics

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status according to the latest manufacturer documentation. Confirm the 'HX' designation corresponds to the TSSOP-EP-16 package with exposed pad for thermal management. Ensure the specific revision level matches your board design requirements. Cross-reference the datasheet version to validate electrical characteristics against your system specifications before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input voltage range up to 42 V is required with output currents up to 1.5 A. The adjustable switching frequency allows optimization for efficiency versus component size. Consider the thermal performance of the TSSOP-EP-16 package for your PCB layout. Compare against the LM25576 if higher output current capability is needed, or the LM2575 series for lower input voltage applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family, designed to reduce design time through integrated power switches. The LM25575 specifically targets high-input voltage applications where traditional controllers require external high-voltage MOSFETs. It complements other TI regulators like the LM25576 for higher current needs and the LM2575 for lower voltage ranges, providing a scalable solution for various power management requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM25575MHX/NOPB is functionally equivalent to the LM25575MH/NOPB, with the primary difference being packaging format (cut tape vs. tube). Verify pin compatibility and thermal characteristics when substituting. No direct single-pin replacement exists for different current ratings within the same package without layout changes.