LM2575HVS-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The UMW LM2575HVS-ADJ is a monolithic integrated circuit designed as a step-down switching regulator. It operates with an input voltage range up to 60V and delivers a continuous output current of 1A. The device features an adjustable output voltage ranging from 1.23V to 57V, controlled via an external feedback network. It utilizes a fixed internal oscillator frequency of 52kHz for efficient power conversion. The component is housed in a TO-263-5 surface-mount package and supports operation within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage power switch capable of handling input voltages up to 60V
• Includes built-in thermal shutdown and current limit protection circuits
• Features a fixed 52kHz internal oscillator to minimize external component count
• Provides adjustable output voltage control through external resistor feedback

Voltage Regulators - DC DC Switching Regulators Applications

• High-voltage step-down DC-DC converters
• Pre-regulator stages for downstream linear regulators
• Efficient battery-powered systems requiring wide input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer marking on the component body to confirm UMW origin, as this part number is widely replicated across multiple foundries. Ensure the datasheet specifications match the specific revision required for your design, particularly regarding thermal performance and pinout compatibility. Cross-reference the ordering suffixes to confirm RoHS compliance status if mandated by your project requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a buck converter topology is required with an input voltage exceeding standard 40V limits. It is suitable for designs needing a single-output adjustable supply with moderate current demands. Consider the thermal resistance of the TO-263-5 package and ensure adequate PCB copper area for heat dissipation during high-load operations.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575HV series of simple switchers, which are known for their ease of use and minimal external component requirements. The HV variant specifically extends the input voltage capability compared to standard LM2575 parts, making it appropriate for industrial and automotive applications with higher bus voltages.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other manufacturers' LM2575HVS-ADJ variants, such as those from Texas Instruments or National Semiconductor, provided the pinout and electrical characteristics remain identical. Verify that any replacement maintains the same 52kHz switching frequency and TO-263-5 footprint.