LM2574N-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574N-ADJ is an adjustable output step-down switching regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with an input voltage range of 4V to 40V and provides a maximum output current of 500mA. The device utilizes a fixed 52kHz switching frequency and employs Buck topology for efficient DC/DC conversion. It is housed in an 8-pin PDIP package designed for through-hole mounting. The component supports an operating temperature range from -40°C to 125°C and includes internal features such as a 150mV reference voltage and thermal shutdown protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch capable of delivering up to 500mA load current
• Fixed 52kHz internal oscillator eliminates external timing components
• Built-in thermal shutdown circuitry protects against overheating
• Adjustable output voltage controlled via external resistor divider

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for switching regulators
• Efficient straight-through DC/DC converters
• Battery-powered systems requiring step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number suffix corresponds to the PDIP-8 through-hole package variant rather than surface-mount options. Confirm RoHS compliance status and ensure the supplier documentation matches the manufacturer's official datasheet specifications for the LM2574 series. Cross-reference pinouts to avoid confusion with similar logic or trigger devices.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, through-hole solution is required for moderate current applications up to 500mA. It is suitable for designs needing wide input voltage tolerance and fixed-frequency operation without external clocking. Consider alternative packages if board space constraints favor surface-mount technology over standard DIP formats.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2574xx series of SIMPLE SWITCHER regulators, which are known for ease of use and high efficiency. The series includes various fixed voltage outputs and adjustable variants, catering to diverse power management needs in industrial and consumer electronics. The LM2574N-ADJ specifically offers flexibility in setting output voltages within its operational limits.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HVM-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2574N-ADJ?

The maximum input voltage supported by the LM2574N-ADJ is 40V.

Does the LM2574N-ADJ require an external oscillator?

No, the device features a fixed 52kHz internal oscillator, eliminating the need for external timing components.