LTC3615IFE-1

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3615IFE-1 is a dual synchronous step-down DC/DC converter from Analog Devices, featuring two independent channels each delivering up to 3A of output current. It operates with an input voltage range of 2.25V to 5.5V and supports adjustable output voltages from 600mV to 5.5V. The device utilizes a constant-frequency current-mode architecture with a programmable switching frequency up to 4MHz. Key electrical specifications include a quiescent current of 130µA in Burst Mode operation at no-load and a shutdown current of zero amperes. The component is housed in a thermally enhanced 24-pin TSSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual-channel architecture allows for phase-shift selection (0°, 90°, or 180°) to minimize input and output ripple, supporting single 6A output configurations.
• Integrated Burst Mode operation maintains low quiescent current while regulating output voltage, dropping to zero current during shutdown.
• Programmable slew rate limiting reduces electromagnetic interference (EMI), and external synchronization is supported up to the maximum operating frequency.

Voltage Regulators - DC DC Switching Regulators Applications

• DDR memory termination power supplies
• Soft-start circuit implementations
• Single lithium-ion battery powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and thermal performance characteristics. Ensure the selected package variant matches the required PCB footprint and thermal dissipation needs for the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing dual-rail power systems requiring high efficiency and low noise from a single-cell lithium-ion source. Consider the phase-shift capabilities if minimizing input capacitor size or reducing EMI are critical design constraints for the system.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3615 family of dual synchronous buck converters. It shares architectural similarities with the standard LTC3615 but offers specific phase-shift options tailored for ripple cancellation in dual-output or combined high-current applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes within the same family include the LTC3615IFE and LTC3615MPFE-1#PBF. Verify that the replacement part supports the required phase-shift configuration and thermal package specifications for the existing design.

Voltage Regulators - DC DC Switching Regulators FAQ

What phase-shift options are available for the LTC3615IFE-1?

The LTC3615IFE-1 supports 0°, 90°, or 180° phase shifting between its two channels to minimize input and output voltage ripple.

How does the device handle no-load conditions?

It employs Burst Mode operation to maintain low quiescent current (130µA) while keeping outputs regulated, and drops to zero current when shut down.