LTC3858EGN-1#TRPBF

DC DC Switching Controllers Overview

The LTC3858EGN-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 constant frequency current mode architecture with a phase-lockable switching frequency up to 850kHz. It utilizes a 28-SSOP package and includes control features such as enable, frequency control, power good, and soft start. The controller drives all N-channel synchronous power MOSFET stages.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture for driving N-channel synchronous power MOSFETs
• Constant frequency current mode operation with phase-lock capability
• Out-of-phase operation minimizes input capacitor ESR losses

DC DC Switching Controllers Applications

• Low quiescent current dual output synchronous buck converters
• High performance dual step-down switching regulator controllers
• Systems requiring minimized input capacitor power loss and noise

DC DC Switching Controllers Procurement Notes

Verify the suffix #TRPBF indicates tape and reel packaging rather than tube packaging found in other variants like #PBF. Confirm the specific temperature grade and package dimensions match the design requirements. Ensure compatibility with the intended switching frequency range and input voltage specifications before procurement.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual independent outputs with low static current consumption. The out-of-phase operation feature is critical for reducing input ripple and noise. Ensure the external components support the maximum switching frequency of 850kHz and the required output current capabilities for the target load conditions.

DC DC Switching Controllers Part Context

This part belongs to the LTC3858 series, which are high-performance dual channel buck controllers. The EG suffix denotes the commercial temperature range and SSOP package. The -1 variant typically specifies specific internal configurations or pinouts compared to other sub-models in the family. It is designed for efficient DC-to-DC conversion in space-constrained applications.

DC DC Switching Controllers Replacement Considerations

LTC3858EGN-1#PBF is a direct functional equivalent differing only in packaging (tube vs. tape and reel). Other members of the LTC3858 family may offer different pinouts or thermal packages but share similar core control architectures.