LTC3858EGN-1#PBF

DC DC Switching Controllers Overview

The LTC3858EGN-1#PBF 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. Key electrical parameters include a quiescent current of 8µA, a maximum duty cycle of 0.994, and a load regulation of 0.01%. It is housed in a 28-lead SSOP package and functions across a temperature range of -40°C to 125°C.

DC DC Switching Controllers Feature Summary

• Dual channel architecture for independent or interleaved power delivery
• Constant frequency current mode control for stable operation
• Phase-lockable switching frequency capability up to 850kHz
• Low quiescent current design for enhanced efficiency

DC DC Switching Controllers Applications

• High performance dual step-down switching regulator controllers
• Driving N-channel synchronous power MOSFET stages
• Minimizing input capacitor ESR power loss and noise via out-of-phase operation

DC DC Switching Controllers Procurement Notes

Verify the specific ordering suffix matches the required package type and lead-free status. Confirm that the component meets RoHS3 specifications as indicated in manufacturer documentation. Ensure compatibility with the intended thermal management solution given the SSOP package constraints. Cross-reference the datasheet revision to confirm feature consistency before final procurement decisions.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring dual independent outputs or interleaved phases to reduce input ripple. Consider the 850kHz maximum frequency for balancing component size against transient response requirements. Evaluate the low quiescent current benefit for applications sensitive to standby power consumption. Ensure the external MOSFET selection aligns with the controller's drive capabilities and the specified input voltage range.

DC DC Switching Controllers Part Context

This component belongs to the LTC3858 series, which are high-performance dual step-down switching regulator controllers. It is part of Analog Devices' portfolio focused on efficient power management solutions. The EG suffix indicates the commercial temperature grade and SSOP packaging variant. It serves as a core control element in complex DC-DC conversion architectures requiring precise regulation.

DC DC Switching Controllers Replacement Considerations

LTC3857IGN-1#PBF