LMR51603YDBVR

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51603YDBVR is a synchronous buck converter from Texas Instruments, housed in an SOT-23-6 package. It supports an input voltage range of 4.5V to 65V and delivers up to 300mA output current. The adjustable output voltage spans from 800mV to 28V. Operating at a fixed switching frequency of 1.1MHz, the device features a quiescent current of 420µA. It functions within a temperature range of -40°C to +150°C TJ.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency in a compact footprint
• Fixed 1.1MHz switching frequency enables use of small external components
• Wide input voltage range accommodates various power supply sources
• Thermal shutdown and current limit protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems requiring isolated or non-isolated DC-DC conversion
• Battery-powered equipment needing efficient step-down regulation
• Embedded computing modules with limited board space constraints
• Automotive infotainment and sensor interface power rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to confirm pinout and thermal characteristics. Ensure compatibility with PCB layout guidelines specified in the datasheet for optimal performance. Confirm RoHS compliance status through manufacturer certificates if required by specific regulatory standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed 42V but require only moderate output current. Compare against LMR51403 variants if lower input voltage suffices, as they may offer different cost structures. Consider thermal management requirements due to the small SOT-23-6 package size under load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the LMR51xxx family designed for simple design-in with minimal external components. Shares architectural similarities with LMR51610 but offers lower current capacity. Suitable for applications prioritizing simplicity and wide input range over high power density.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR51610YDBVR provides similar functionality with higher 1A output capability. LMR51403YDBVR serves as a lower-cost alternative for inputs below 42V. Verify pin-to-pin compatibility and thermal performance before substitution.