LM2575D2T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575D2T-ADJ is a step-down switching regulator from onsemi, part of the SIMPLE SWITCHER family. It operates with an input voltage range up to 40V and delivers a maximum output current of 1A. The device utilizes pulse-width modulation (PWM) at a fixed switching frequency of 52kHz. It features an adjustable output voltage range from 1.23V to 37V, controlled via an external resistor divider. The component is housed in a TO-263-5 surface-mount package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for 1A continuous load current
• Fixed 52kHz internal oscillator eliminates need for external timing components
• Built-in thermal shutdown circuitry protects against overheating conditions
• Adjustable output voltage capability using standard resistor network

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for downstream linear regulators
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the specific manufacturer's designation for the adjustable variant. Confirm RoHS compliance status as per the latest datasheet revision. Ensure the TO-263-5 package type aligns with PCB footprint requirements. Cross-reference the part number with official onsemi documentation to avoid confusion with fixed-voltage or through-hole equivalents.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a non-isolated DC-DC conversion topology is required for moderate power levels. The adjustable output feature provides flexibility for custom voltage rails. Consider the 52kHz switching frequency for EMI constraints and inductor size trade-offs. Verify that the input voltage does not exceed the 40V absolute maximum rating under all operating transients.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of simple switchers, originally developed by National Semiconductor and now produced by onsemi. The D2T suffix indicates the surface-mount TO-263 package variant. It serves as a cost-effective alternative to more complex PWM controllers, integrating the power switch and control logic into a single IC for simplified design implementation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575D2T-ADJ/NOPB