LM2575T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-ADJ is a monolithic integrated circuit step-down switching regulator from the LM2575 series, manufactured by onsemi. It operates with an input voltage range of 4.75V to 40V and delivers a maximum output current of 1A. The device features a fixed switching frequency of 52kHz and utilizes a TO-220-5 through-hole package. It provides adjustable output voltages ranging from 1.23V to 37V. The component supports an operating temperature range from -40°C to +125°C and includes built-in thermal shutdown and current limiting protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 52kHz fixed-frequency oscillator for simplified external component selection
• Includes internal thermal shutdown and per-cycle current limiting for system safety
• Supports external shutdown control via the ON/OFF pin to minimize standby current

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC step-down power supplies
• Pre-regulator circuits for linear post-regulators
• Efficient battery-powered systems requiring buck conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., G) against the manufacturer's official datasheet to confirm RoHS compliance and lead-free status. Confirm that the ordering part number matches the exact package variant required for your PCB layout. Check for any recent Product Change Notifications or End-of-Life announcements directly from onsemi documentation before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current buck converter is needed with minimal external parts. Ensure the input voltage stays within the 40V maximum limit. Consider the thermal performance in the TO-220 package under full load conditions. Verify that the required output voltage falls within the 1.23V to 37V adjustable range defined by the feedback network.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of switching regulators, which are designed as direct replacements for traditional three-terminal linear regulators. The series offers various fixed voltage options alongside the adjustable version. It is widely used in applications requiring efficient voltage conversion with high reliability and simple design implementation compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-ADJG is a verified equivalent part number from onsemi. Other manufacturers produce functionally similar devices such as the LM2575-ADJ from Texas Instruments, but cross-manufacturer substitution requires careful verification of pinout compatibility and electrical parameter tolerances.