LM2576T-005G

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576T-005G is a monolithic integrated circuit step-down switching regulator from the LM2576 series, manufactured by onsemi. It provides a fixed output voltage of 5.25V with a maximum continuous load current capability of 3A. The device operates within an input voltage range of 7V to 40V and utilizes a 52kHz internal oscillator for pulse width modulation control. Designed for through-hole installation in a TO-220 package, it ensures excellent line and load regulation. The component supports an operating temperature range from -40°C to +125°C and achieves an efficiency of approximately 77% with ripple and noise limited to 50mV.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency internal oscillator and requires only four external components for basic operation.
• Includes internal frequency compensation and thermal shutdown protection for fault condition safety.
• Offers guaranteed output voltage tolerance of ±4% under specified input and load conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient replacement for traditional three-terminal linear regulators in power supply designs.
• Pre-regulator stages for downstream switching regulators requiring stable intermediate voltage.
• Directly usable switch-mode power supplies utilizing standard optimized inductor series.

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number corresponds to the through-hole TO-220 package variant rather than surface-mount alternatives like the D2PAK version. Confirm RoHS compliance status as indicated in official datasheets. Ensure the fixed 5.25V output specification matches the design requirements, noting that this specific suffix denotes a fixed voltage option distinct from adjustable or other fixed voltage variants within the same family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current buck converter solution is required for through-hole PCB assembly. The fixed 5.25V output makes it suitable for applications needing precise voltage levels without external feedback resistor networks. Consider the thermal performance and heat dissipation requirements associated with the TO-220 package when designing for high ambient temperatures or heavy loads near the 3A limit.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2576 series of SIMPLE SWITCHER regulators, known for simplifying the design of step-down converters. The series includes fixed output versions at 3.3V, 5V, 12V, and an adjustable variant. The LM2576T-005G specifically represents the through-hole package option with a fixed output, distinguishing it from surface-mount counterparts such as the LM2576D2T-005G which uses a TO-263 package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576D2T-005G