LM2576R-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576R-ADJ is a monolithic integrated circuit step-down switching regulator from the TAEJIN LM2576 series, designed for easy and convenient buck converter implementation. It supports an adjustable output voltage range of 1.23V to 37V with a maximum tolerance of ±4% under line and load conditions. The device guarantees a 3.0A output current capability and operates with a wide input voltage range. It features a fixed internal oscillator frequency of 52kHz and includes TTL shutdown capability for low power standby modes. The component incorporates thermal shutdown and current limit protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Monolithic integration simplifies design by requiring only four external components
• Internal 52kHz fixed frequency oscillator eliminates need for external timing parts
• Integrated thermal shutdown and current limit protection ensure operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators
• Positive to negative converters (buck-boost)
• Power supply for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify manufacturer authenticity as TAEJIN is listed alongside other producers like National Semiconductor and onsemi in public records. Confirm package type matches application requirements, as the LM2576 series utilizes various packages including TO-220 and D2PAK variants. Ensure the specific suffix corresponds to the desired pin configuration and mounting style before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing a cost-effective buck converter requiring up to 3A output current. The adjustable version allows flexible output voltage setting between 1.23V and 37V. Consider the 52kHz switching frequency for standard inductor availability. Verify that the input voltage range accommodates the system's supply variations and that thermal management suits the expected load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2576 series represents a family of simple switcher regulators widely used in industrial and consumer electronics. While originally associated with National Semiconductor, multiple manufacturers including onsemi and TAEJIN produce compatible versions. This specific model belongs to the adjustable output variant, distinguishing it from fixed voltage options like 5.0V or 12V within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576S-ADJ/NOPB and LM2576D2T-ADJG are confirmed substitutes within the same series offering identical electrical specifications.