LTC3858IGN-1#TRPBF

DC DC Switching Controllers Overview

The LTC3858IGN-1#TRPBF is a dual-channel synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 38V and supports output voltages from 800mV to 24V. The device features a programmable switching frequency between 75kHz and 850kHz, with specific phase-lockable ranges of 105kHz to 835kHz and 350kHz to 535kHz. It utilizes a constant-frequency current mode architecture and drives all N-channel synchronous power MOSFET stages. The component is housed in a 28-SSOP package and is rated for operation temperatures from -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture designed to drive all N-channel synchronous power MOSFET stages for high-performance buck conversion.
• Constant-frequency current mode control allows for phase-lockable switching frequencies up to 850kHz.
• Out-of-phase operation minimizes power loss and noise associated with input capacitor ESR.
• Integrated OPTI-LOOP compensation optimizes transient response across wide output capacitance and ESR variations.

DC DC Switching Controllers Applications

• High-density point-of-load (POL) power supplies
• Industrial equipment power distribution
• Telecommunications infrastructure systems
• Embedded computing platforms

DC DC Switching Controllers Procurement Notes

Verify the suffix TRPBF indicates tape-and-reel packaging when sourcing this specific variant. Confirm the operating temperature grade matches industrial requirements. Ensure the 28-SSOP footprint aligns with PCB layout constraints. Validate that the input voltage range covers the system's maximum supply conditions. Check RoHS compliance status for environmental regulations.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring dual independent outputs with low quiescent current. Consider the phase-lockable frequency feature for synchronization needs. Evaluate the OPTI-LOOP compensation for stability with varying output capacitors. Compare against single-channel alternatives if only one output is required. Assess thermal performance based on the SSOP package limitations.

DC DC Switching Controllers Part Context

This component belongs to the LTC3858 family of low IQ, dual 2-phase synchronous step-down controllers. It shares architectural similarities with the LTC3858EGN-1#PBF but differs in packaging format. The device is part of Analog Devices' portfolio of high-efficiency DC/DC switching regulators designed for demanding power management tasks.

DC DC Switching Controllers Replacement Considerations

LTC3858EGN-1#PBF serves as a tube-packaged alternative within the same functional family. Both parts share identical electrical specifications and pinouts. Verify that the change in packaging does not impact assembly processes or inventory handling requirements.