LM2575MX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575MX-ADJ/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, housed in an 8-pin SOIC package. It supports an input voltage range of 4V to 40V and delivers up to 1A output current. The adjustable output voltage spans from 1.23V to 37V. Operating at a fixed switching frequency of 52kHz, the device features internal compensation for minimal external component usage. It includes thermal shutdown and current limit protection, functioning reliably within a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-speed power switch rated for 1A continuous load
• Fixed 52kHz switching frequency reduces required passive component size
• Internal frequency compensation simplifies circuit design
• Built-in thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for switching regulators
• Efficient on-card regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MX' confirms the SOIC-8 surface-mount package variant distinct from TO-263 or TO-220 packages. Confirm 'NOPB' indicates lead-free and RoHS compliance status. Ensure the 'ADJ' designation matches the requirement for an adjustable output configuration rather than a fixed voltage version.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact surface-mount solution is required for buck conversion applications. The SOIC-8 package offers space efficiency compared to through-hole alternatives. Verify that the 52kHz switching frequency aligns with EMI constraints and that the 1A current rating suffices for the target load without exceeding thermal limits under worst-case conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of SIMPLE SWITCHER regulators, designed for ease of use with minimal external components. The MX suffix specifically denotes the small outline integrated circuit package, differentiating it from the S (TO-263) and T (TO-220) variants within the same electrical specification family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include other LM2575MX-ADJ variants from Texas Instruments. Cross-referencing with LM2575HVS series parts requires verification of input voltage tolerance differences.