LM2576D2T-ADJR4G

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576D2T-ADJR4G is a monolithic integrated circuit from the LM2576 series, functioning as a step-down switching regulator (buck converter). It supports an adjustable output voltage range of 1.23 V to 37 V with ±4% maximum regulation over line and load conditions. The device guarantees a 3.0 A output current capability and operates with a fixed internal oscillator frequency of 52 kHz. It accepts a wide input voltage range, typically between 7 V and 40 V. The component is housed in a surface-mount D2PAK-5 package (TO-263) and is rated for an operating junction temperature range of -40 °C to 125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 52 kHz fixed-frequency internal oscillator simplifies external component requirements.
• Includes TTL shutdown capability for low power standby mode operation.
• Built-in thermal shutdown and current limit protection ensures device safety under fault conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• Positive to negative converters (Buck-Boost)
• Power supply for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'R4G' against official onsemi documentation to confirm reel quantity and tape-and-reel specifications. Ensure the ordering part number matches the exact package type and moisture sensitivity level required for your assembly process. Cross-reference the manufacturer's latest datasheet for any updates regarding RoHS compliance status or pinout configurations before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing a buck converter requiring up to 3.0 A output current with an adjustable voltage setting. It is suitable for applications needing a 52 kHz switching frequency to allow the use of standard inductors. Consider the D2PAK-5 package for surface-mount designs where thermal performance and space constraints are balanced. Verify that the input voltage range aligns with the system's power source capabilities.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of easy-to-use switching regulators known for their simplicity and reliability. The LM2576 series is widely recognized for reducing design time by requiring only four external components. The D2T variant specifically denotes the surface-mount D2PAK-5 package, distinguishing it from through-hole TO-220 versions like the LM2576T-ADJ.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2576D2T-ADJG and LM2576D2TR4-5G from onsemi. Other manufacturers offer equivalent parts such as Texas Instruments' LM2576SX-ADJ/NOPB. Verify pin compatibility and thermal characteristics when substituting.