LTC3126EUFD#PBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3126EUFD#PBF is a high-efficiency synchronous buck converter manufactured by Analog Devices Inc. It features an internal no-loss PowerPath supporting 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 delivers up to 2.5 A output current. The adjustable output voltage ranges from 818 mV to 42 V. It supports switching frequencies between 200 kHz and 2.2 MHz. Quiescent current is specified at 2 uA, with a shutdown supply current of 1.2 uA. The component is housed in a QFN-28 package and functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an internal no-loss PowerPath for seamless transition between dual independent input power sources
• Provides high-efficiency synchronous step-down conversion with adjustable output voltage capability
• Supports wide input voltage range suitable for various primary and backup power architectures

Voltage Regulators - DC DC Switching Regulators Applications

• Power supplies utilizing wall adapters combined with lead-acid backup batteries
• Systems requiring uninterrupted operation during primary source transitions
• Embedded applications needing regulated DC-DC conversion from variable input sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify availability status directly with authorized distributors or the manufacturer, as supply constraints may apply. Confirm that the specific suffix matches the required electrical characteristics and packaging format. Ensure compatibility with existing thermal management designs due to the QFN-28 package profile. Validate regulatory compliance documentation against regional requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring dual-input redundancy without external diode losses. Evaluate the need for the specific 2.5 A current rating against load requirements. Consider the wide input voltage range if interfacing with diverse power sources. Assess thermal performance needs based on the operating environment and package limitations.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3126 series of power management ICs designed for efficient energy transfer. It addresses the need for reliable power delivery in environments where input sources may vary or fail unexpectedly. The integration of the PowerPath simplifies design complexity compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative components from other manufacturers.