LMR51420YDDCR

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51420YDDCR is a SIMPLE SWITCHER synchronous buck converter from Texas Instruments. It operates with an input voltage range of 4.5 V to 36 V and delivers up to 2 A output current. The device features a fixed switching frequency of 1.1 MHz and supports adjustable output voltages from 600 mV to 36 V. It includes integrated power MOSFETs, a low quiescent current of 40 uA, and thermal shutdown protection. The component is housed in a compact SOT-23-THIN-6 package and functions within a junction temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Fixed 1.1 MHz switching frequency enables small external component size
• Low quiescent current reduces standby power consumption
• Built-in thermal shutdown protects against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems
• Consumer electronics power supplies
• Infotainment system biasing
• Point-of-load regulation modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'YDDCR' matches the required tape-and-reel packaging configuration. Confirm that the 36 V maximum input rating aligns with the target application's supply rails. Ensure the SOT-23-THIN-6 footprint requirements are compatible with the PCB layout design before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a moderate 2 A output current is sufficient for the load. The 1.1 MHz frequency offers a balance between efficiency and passive component size compared to lower-frequency alternatives. Consider the 36 V input limit when designing for higher voltage bus architectures where other family members may be more appropriate.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR51420 series of SIMPLE SWITCHER regulators. It shares architectural similarities with the LMR51625 but differs in input voltage range and output current capabilities. The series focuses on providing robust, easy-to-design buck conversion solutions for general-purpose applications requiring reliable performance in compact form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR51420XFDDCR serves as a direct pin-compatible alternative within the same series.