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LM2574N-ADJG is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG BUCK BST ADJ 500MA 8PDIP. Review the specifications below when checking this part for your BOM.
The LM2574N-ADJG is a SIMPLE SWITCHER power regulator manufactured by onsemi, designed for step-down (buck) voltage conversion. It operates with an input voltage range up to 40V and provides a continuous output current of 500mA. The device features an adjustable output voltage controlled via an external resistor divider network. It utilizes a fixed switching frequency of 58kHz to minimize the size of passive components. The component is housed in an 8-pin PDIP package and supports through-hole mounting. It functions within a temperature range from -40°C to +125°C.
Verify the manufacturer marking matches onsemi specifications. Confirm the suffix 'G' indicates RoHS compliance. Ensure the PDIP-8 package dimensions align with PCB footprint requirements. Validate the date code against production timelines. Request original datasheets to confirm electrical characteristics match design needs.
Select this component when an adjustable buck converter is required with high input voltage tolerance. It is suitable for applications needing 500mA load current without synchronous rectification. Consider the 58kHz switching frequency for standard inductor sizing. Evaluate thermal performance at maximum ambient temperatures. Compare against fixed-voltage variants if specific output levels are sufficient.
This part belongs to the LM2574 series of SIMPLE SWITCHER regulators. It shares architectural similarities with other members like the LM2574N-5.0 but offers adjustable output flexibility. The series is known for reducing component count and board space. It serves as a legacy solution for general-purpose power management in industrial and commercial equipment.
The output voltage is set using an external resistor divider network connected between the output, feedback pin, and ground.
The internal oscillator operates at a nominal frequency of 58kHz.
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