LM2575TV-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575TV-3.3G is a monolithic integrated circuit from the LM2575 series, functioning as a step-down (buck) switching voltage regulator manufactured by onsemi. It provides a fixed 3.3V output with a maximum load current of 1A. The device operates within an input voltage range of 4.75V to 40V and utilizes a fixed 52kHz internal oscillator. Designed for through-hole mounting, it is housed in a TO-220-5 package with formed leads. The component supports an operating junction temperature range from -40°C to +125°C and includes built-in frequency compensation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator and internal power switch to minimize external component count
• Includes comprehensive protection mechanisms such as thermal shutdown and cycle-by-cycle current limiting
• Offers high efficiency performance suitable for replacing linear regulators without requiring large heat sinks

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient step-down DC-DC conversion for embedded systems
• Pre-regulator stages for downstream linear voltage regulators
• Positive-to-negative voltage inversion circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance and lead-free construction per manufacturer standards. Confirm the part status as End-of-Life (EOL) or discontinued via official onsemi notifications before finalizing design-in decisions. Ensure the TO-220-5 through-hole package aligns with PCB assembly capabilities and mechanical constraints.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output at 1A is required with minimal external circuitry. The TO-220-5 package is appropriate for applications where through-hole mounting is preferred or necessary for thermal/mechanical reasons. Consider alternative packages like SOT-223 or SOIC if surface-mount technology is mandated for the production process.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 family of simple switcher regulators, originally developed by National Semiconductor and now produced by onsemi. The series is characterized by its ease of use, requiring only four external components for operation. The TV suffix specifically denotes the TO-220-5 through-hole package variant within the broader product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-ADJG (onsemi)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the typical switching frequency of the LM2575TV-3.3?

The internal oscillator operates at a fixed frequency of 52 kHz.

Does the LM2575TV-3.3 include short-circuit protection?

Yes, the device features cycle-by-cycle current limiting and thermal shutdown protection to ensure safe operation under fault conditions.