LTC3126EUFD

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3126EUFD is a high-efficiency synchronous buck converter manufactured by Analog Devices Inc. It features an internal no-loss PowerPath that supports seamless operation from two separate input power sources, such as a wall adapter and a lead-acid backup battery. The device operates with an input voltage range of 2.4 V to 42 V and provides a maximum output current of 2.5 A. The adjustable output voltage ranges from 818 mV to 42 V. It includes a shutdown feature and operates at a switch frequency between 200 kHz and 2.2 MHz. The component is housed in a QFN-28 package and is rated for industrial temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an internal no-loss PowerPath for seamless switching between dual independent input sources
• Functions as a high-efficiency synchronous buck converter with adjustable output voltage
• Supports wide input voltage ranges suitable for diverse power supply architectures

Voltage Regulators - DC DC Switching Regulators Applications

• 5V, 2A power supplies powered by wall adapters and lead-acid backup batteries
• Automotive and photovoltaic powered 5V USB supplies
• 12V step-down converters with dual inputs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix EUFD against official Analog Devices documentation to confirm temperature grade and packaging configuration. Confirm availability status directly with authorized distributors as supply conditions may vary. Ensure the selected variant matches the required thermal performance and pinout for the intended PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring redundant or dual-input power sources without interruption during source transitions. Consider the 2.5 A output capability and wide input range for applications involving variable energy harvesting or automotive environments. Evaluate the QFN-28 package constraints for thermal management and board space requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

The LTC3126 belongs to the Analog Devices family of DC-DC switching regulators designed for complex power management scenarios. It is part of a series that emphasizes efficiency and reliability in portable and industrial applications. The device integrates control logic and power switches into a compact form factor, simplifying the design of robust power systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical specifications carefully before replacing.