LM5576MH/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM5576MH/NOPB is a SIMPLE SWITCHER step-down switching regulator from Texas Instruments, designed for high-voltage applications. It features an input voltage range of 6V to 75V and delivers a maximum output current of 3A. The device offers adjustable output voltages from 1.225V up to 70V with a single positive output configuration. Operating at a switch frequency between 50kHz and 500kHz, it utilizes a buck topology without synchronous rectification. The component is housed in a 20-PowerTSSOP package and supports junction temperatures from -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side N-channel power switch enables efficient step-down conversion without external synchronous rectifiers.
• Fixed-frequency current mode control architecture ensures stable operation across wide input voltage variations.
• Built-in protection mechanisms include thermal shutdown and cycle-by-cycle current limiting for robust reliability.

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 MH against the official datasheet to confirm the 20-PowerTSSOP package variant. Ensure the NOPB designation aligns with RoHS compliance requirements for your target market. Cross-reference the manufacturer part number directly with Texas Instruments documentation to validate availability and revision status before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input voltage up to 75V is required with a 3A load capacity. The non-synchronous design simplifies bill of materials compared to synchronous alternatives. Consider the 20-pin package size for thermal management needs in dense layouts. Verify that the 50kHz to 500kHz frequency range meets electromagnetic interference constraints for the specific application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SIMPLE SWITCHER family, which integrates power switches and control circuitry into a single IC. It serves as a high-voltage alternative to lower-input regulators like the LM2576 series. The LM5576 provides higher current capability than the LM5575 while maintaining similar input voltage ranges, bridging the gap between low-power and heavy-duty industrial power supplies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5576QMHX/NOPB is a qualified automotive-grade version of this regulator. LM25576MH/NOPB offers similar functionality but with a lower maximum input voltage of 42V. Verify pin compatibility and thermal performance when substituting these parts.