LM2574HVN-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574HVN-ADJ is a step-down switching voltage regulator from the LM2574HV series, manufactured by Texas Instruments. It operates with an input voltage range of 4 V to 60 V and provides a continuous output current of 500 mA. The device utilizes a fixed internal switching frequency of 58 kHz and features adjustable output voltage control via an external resistor network. It is housed in an 8-pin PDIP package designed for through-hole mounting. The component supports operation across an extended temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of handling input voltages up to 60 V
• Fixed internal oscillator operating at 58 kHz for simplified external component selection
• Built-in thermal shutdown circuitry to protect against excessive junction temperatures
• Adjustable output voltage configuration using standard external resistors

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial control systems
• Input voltage step-down for battery-powered equipment
• Pre-regulation stages for downstream linear regulators
• General-purpose DC/DC conversion in embedded applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the selected package variant matches the intended PCB layout requirements. Cross-reference the part number with the latest revision history to validate RoHS compliance status and manufacturing origin details before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an input supply exceeds 40 V but requires a simple buck topology. The adjustable output option offers flexibility for non-standard voltage rails without custom ICs. Consider the 500 mA current limit and 58 kHz switching frequency when sizing passive components. Evaluate thermal performance requirements given the through-hole package constraints and maximum operating temperature limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM2574HV family, which extends the standard LM2574 capabilities to higher input voltages. The HV designation indicates enhanced breakdown voltage ratings suitable for automotive and industrial bus architectures. The ADJ suffix denotes the adjustable output version, contrasting with fixed voltage variants like 3.3V or 5.0V options within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HVN-3.3/NOPB: Fixed 3.3V output alternative; verify voltage requirement alignment. LM2574HVMX-ADJ/NOPB: Surface-mount SOIC-14 equivalent; check footprint compatibility.