LMR51403YFDBVR

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51403YFDBVR is a synchronous buck converter from Texas Instruments, housed in an SOT-23-6 package. It supports an input voltage range of 4 V to 42 V and delivers up to 300 mA output current. The device features adjustable switching frequencies between 400 kHz and 1.1 MHz, with a maximum output voltage of 28 V. Quiescent current is specified at 420 uA during operation and 38 uA in shutdown mode. It operates within a temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency in a compact footprint
• Adjustable switching frequency allows optimization for size or performance
• Built-in soft-start limits inrush current during power-up
• Thermal shutdown protection safeguards against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems
• Consumer electronics power management
• Infotainment subsystems
• Point-of-load regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'YFDBVR' against the manufacturer's official datasheet to confirm pinout, thermal characteristics, and RoHS compliance status. Ensure the ordering part number matches the required package variant and tape-and-reel specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 42 V is required alongside moderate current delivery in a small SOT-23-6 package. Consider the adjustable frequency feature if electromagnetic interference filtering needs customization. Verify that the 300 mA output capability meets the load requirements without exceeding thermal limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR51403 family of SIMPLE SWITCHER converters. It shares architectural similarities with other members like the LMR51406 but differs in output current capacity and specific frequency ranges. The family targets applications requiring efficient step-down conversion in space-constrained environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LMR51403YDBVR and LMR51403Y3DBVR. These variants share the same core functionality but may differ in packaging options or specific environmental qualifications. Verify compatibility with existing board layouts and thermal designs.