LTC3857IUH#TRPBF

DC DC Switching Controllers Overview

The LTC3857IUH#TRPBF is a dual synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It features an ultra-low quiescent current of 1.2 mA and supports two independent output channels with phase synchronization capability. The device operates within an input voltage range of 4.5 V to 60 V, delivering up to 25 A per channel when paired with external MOSFETs. It utilizes a fixed 770 kHz switching frequency and includes integrated soft-start, over-current protection, and power good indicators. The component is housed in a 32-lead QFN package suitable for surface mount applications.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture with independent control loops
• Phase-synchronized operation for reduced input ripple
• Ultra-low quiescent current for enhanced efficiency
• Integrated soft-start and protection circuitry

DC DC Switching Controllers Applications

• Industrial distributed power systems
• Telecommunications infrastructure
• Point-of-load regulation modules
• High-density server power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (EUH vs IUH) against the required operating temperature range, as industrial grades differ from extended ranges. Confirm RoHS compliance status through official manufacturer documentation prior to ordering. Ensure the selected package variant matches the thermal requirements of the target PCB layout. Cross-reference the datasheet revision date to ensure compatibility with existing design specifications.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring high current density with minimal standby power consumption. Evaluate the need for phase synchronization to minimize input capacitor sizing in multi-phase configurations. Consider the 60 V maximum input rating when designing for automotive or industrial bus architectures. Verify that external MOSFET selection aligns with the driver capabilities and switching frequency constraints defined in the technical data.

DC DC Switching Controllers Part Context

This component belongs to the LTC38xx series of high-performance synchronous buck controllers designed for demanding power management applications. It represents Analog Devices' focus on integrating advanced control algorithms with low-power operation. The part is engineered to replace discrete solutions, offering improved reliability and space efficiency in compact power supply designs.

DC DC Switching Controllers Replacement Considerations

LTC3857EUH#TRPBF