LM20343MHE/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM20343MHE/NOPB is a synchronous buck regulator from Texas Instruments capable of delivering up to 3A of load current. It features an input voltage range of 4.5V to 36V and supports adjustable switching frequencies between 250kHz and 1MHz. The device integrates 130mΩ high-side and 110mΩ low-side power MOSFETs. Output voltage is adjustable down to 788mV, with a maximum output of 28.8V. It operates within a junction temperature range of -40°C to 125°C and utilizes current mode control.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side power MOSFETs for efficient synchronous rectification
• Supports external synchronization to align switching frequency with an external clock source
• Features adjustable switching frequency to optimize efficiency and component size
• Includes programmable soft-start to limit inrush current during startup

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Embedded systems power distribution
• Communication equipment bias supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as 'MHE' and '/NOPB' to ensure correct package type and lead-free compliance. Confirm that the specific revision matches your design requirements. Cross-reference official datasheets for thermal performance data under your specific PCB layout conditions. Ensure compatibility with your input voltage and load current specifications before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 36V is required alongside high output current capability. The adjustable frequency feature allows designers to balance efficiency against passive component size. Consider the integrated MOSFET resistance values for thermal management calculations. Verify that the operating temperature range meets the environmental constraints of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2034x family of synchronous buck regulators. It shares functional similarities with other TI parts like the LM20342 but offers higher current capacity. The family is designed for applications requiring compact solutions with high efficiency. The '/NOPB' suffix indicates a lead-free and RoHS-compliant manufacturing process.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include the LM20342MH/NOPB for lower current requirements or the LM20343MH/NOPB if the HE package variant is not strictly necessary. Verify pinout compatibility and thermal characteristics when swapping packages. Check datasheet differences regarding minimum input voltage and peak current limits.