LM2574N-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574N-ADJ/NOPB is a SIMPLE SWITCHER power regulator from Texas Instruments, functioning as a step-down DC/DC converter. It operates with an input voltage range of 4.5 V to 40 V and provides an adjustable output voltage between 1.23 V and 37 V. The device supports a maximum output current of 500 mA and utilizes a fixed switching frequency of 52 kHz. Designed for through-hole mounting, it is housed in an 8-pin MDIP package. The component ensures stable regulation across an operating temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller simplifies design by requiring minimal external components
• Fixed 52 kHz switching frequency enables the use of compact magnetic components
• Internal thermal shutdown protects against excessive junction temperatures
• Adjustable output voltage allows flexibility for various system requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for switching post-regulated linear regulators
• Battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status according to the manufacturer's latest documentation. Confirm the package type matches the required through-hole MDIP footprint for PCB layout compatibility. Ensure the supplier provides valid traceability data for quality assurance purposes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, low-cost step-down solution is needed for moderate current loads up to 500 mA. It is suitable for applications where a fixed switching frequency is preferred to simplify EMI filtering. Consider the through-hole package requirement for mechanical stability or prototyping needs over surface-mount alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574 family of SIMPLE SWITCHER regulators, known for ease of use and high efficiency. The 'N' designation indicates the through-hole MDIP package variant, while 'ADJ' specifies the adjustable output version. The 'NOPB' suffix denotes a non-pb (lead-free) product that meets environmental standards.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574N-5.0/NOPB offers a fixed 5V output option within the same package and family.