LM2576D2T-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576D2T-ADJ is a monolithic integrated circuit from the LM2576 series, designed as a step-down switching regulator (buck converter). It provides an adjustable output voltage ranging from 1.23 V to 37 V with ±4% maximum tolerance over line and load conditions. The device supports a guaranteed 3.0 A output current and operates with a wide input voltage range. It features a fixed 52 kHz internal oscillator and utilizes pulse width modulation for control. The component is housed in a surface-mount TO-263 package with five pins.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 52 kHz fixed-frequency internal oscillator for simplified design
• Includes TTL shutdown capability enabling low power standby mode
• Provides thermal shutdown and current limit protection circuits
• Requires only four external components for basic operation

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 the specific suffix against official datasheets to confirm package type and lead-free status. Ensure compatibility with required input voltage ranges and thermal management solutions. Confirm RoHS compliance requirements match project specifications. Check for moisture sensitivity level classifications during storage and handling procedures.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing buck converters requiring up to 3.0 A output current. The adjustable version allows flexible output voltages between 1.23 V and 37 V. Consider the 52 kHz switching frequency for standard inductor availability. Evaluate thermal performance based on input-output voltage differentials and ambient temperature constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of Easy Switcher regulators manufactured by onsemi. The series includes fixed voltage options such as 3.3 V, 5.0 V, 12 V, and 15 V, alongside the adjustable variant. The D2T suffix indicates a surface-mount TO-263 package configuration suitable for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2576D2T-ADJR4G and LM2576T-ADJG. Verify pinout compatibility and electrical parameters before substitution.