LM2576TV-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576TV-3.3G is a monolithic integrated circuit step-down (buck) switching regulator manufactured by onsemi, designed to drive loads up to 3A with excellent line and load regulation. It operates at a fixed internal oscillator frequency of 52 kHz, simplifying the design of switch-mode power supplies by requiring only four external components. The device provides a fixed 3.3V output voltage and includes an internal frequency compensation network. It supports through-hole mounting in a TO-220-5 package and features cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator and internal frequency compensation to minimize external component count
• Provides high-efficiency buck conversion with guaranteed 3A output current capability
• Includes built-in cycle-by-cycle current limiting and thermal shutdown for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems requiring stable 3.3V logic supply
• Distributed power architectures in telecommunications equipment
• Battery-powered devices utilizing efficient step-down regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance status as per manufacturer documentation. Confirm the part number corresponds to the TO-220-5 through-hole package variant rather than surface-mount alternatives. Check for end-of-life notifications or discontinuance alerts from onsemi prior to finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required with up to 3A load capacity. Ensure the input voltage range aligns with the standard 40V maximum rating; consider HV variants if inputs exceed this limit. Verify that the through-hole TO-220-5 package fits the mechanical constraints of the target PCB layout.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of SIMPLE SWITCHER regulators, which are widely recognized for replacing traditional three-terminal linear regulators. The series offers various fixed output voltages including 3.3V, 5V, and 12V, alongside adjustable versions. The LM2576T-3.3G specifically denotes the 3.3V fixed output version in the standard voltage family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-for-pin replacements include other manufacturers' LM2576T-3.3 variants. Cross-reference with LM2576HV-3.3 if higher input voltage tolerance is needed, noting the package and electrical differences.