LM5574MT

Voltage Regulators - DC DC Switching Regulators Overview

The LM5574MT is a high-voltage step-down switching regulator manufactured by Texas Instruments. It operates with an input voltage range up to 75V and delivers a maximum output current of 500mA. The device utilizes Emulated Current Mode Control for stable operation. It features a switchable switching frequency ranging from 50kHz to 500kHz, allowing optimization between efficiency and component size. The IC is housed in a 16-TSSOP package and supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports ultra-wide input voltage ranges suitable for automotive and industrial applications
• Integrates Emulated Current Mode Control architecture for improved transient response
• Features adjustable switching frequency to balance efficiency and solution footprint
• Includes built-in protection mechanisms such as over-current protection and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive point-of-load (PoL) regulation
• Telecommunications power distribution systems
• Industrial DC-DC conversion stages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and tape-and-reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the 16-TSSOP package dimensions match your PCB layout requirements. Ensure compatibility with the required switching frequency settings for your target application efficiency goals.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring high input voltages up to 75V with moderate current demands. It is suitable for designs where space constraints allow for TSSOP packaging. Consider the adjustable frequency feature if optimizing for specific electromagnetic interference or inductor size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5574 family of high-voltage buck regulators. It is distinct from the LM2574 series which typically handles lower input voltages. The LM5574 series is designed for more demanding high-voltage environments common in automotive and telecom sectors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM5574MTX/NOPB. Verify pinout and electrical characteristics against the original design requirements before substitution.