LM5045MHX/NOPB

AC DC Converters, Offline Switchers Overview

The LM5045MHX/NOPB is a full-bridge PWM controller from Texas Instruments designed for high-frequency power conversion. It supports Full Bridge, Half Bridge, and Push-Pull topologies with a single output configuration. The device operates within a supply voltage range of 14 V to 100 V and features an adjustable switching frequency from 100 kHz to 2 MHz. It provides a maximum duty cycle of 50% and delivers up to 2 A output current. The integrated oscillator allows for precise timing control, while the output voltage range spans from 400 mV to 1.25 V. Operating temperatures extend from -40°C to +125°C in a 28-pin HTSSOP package.

AC DC Converters, Offline Switchers Feature Summary

• Supports multiple transformer-coupled topologies including full bridge, half bridge, and push-pull configurations.
• Features an integrated oscillator with external synchronization capability for flexible frequency selection.
• Includes built-in protection mechanisms such as under-voltage lockout and thermal shutdown.

AC DC Converters, Offline Switchers Applications

• High-efficiency DC-DC converters
• Industrial power supplies
• Telecommunications equipment

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official documentation to confirm pin compatibility and electrical characteristics. Ensure the HTSSOP-28 package matches your PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement decisions.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing isolated power stages requiring high input voltages up to 100 V. Consider the wide operating temperature range for harsh environments. Evaluate the need for external synchronization if noise immunity is critical in dense circuit layouts.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LM5045 series of advanced PWM controllers. It is distinct from synchronous rectifier controllers and linear regulators. The device focuses on driving primary-side switches in isolated converter architectures rather than secondary-side management.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution guides for equivalent parts. Verify that any alternative maintains the same topology support and voltage ratings.