LTC3808EDE#PBF

DC DC Switching Controllers Overview

The LTC3808EDE#PBF is a synchronous step-down DC/DC controller from Analog Devices, housed in a 14-lead DFN package. It operates with an input voltage range of 2.75V to 9.8V and delivers up to 5A of output current. The adjustable output voltage spans from 600mV to 9.8V. Key electrical parameters include a fixed switching frequency of 750kHz, a maximum duty cycle of 100%, and a quiescent current of 105µA. The device supports clock synchronization and features soft-start capabilities.

DC DC Switching Controllers Feature Summary

• Eliminates the need for external current sense resistors through integrated sensing technology.
• Provides low electromagnetic interference (EMI) performance via spread spectrum modulation.
• Supports high efficiency at light loads by entering pulse skipping mode during low power conditions.

DC DC Switching Controllers Applications

• Single-cell lithium-ion battery powered systems
• Industrial point-of-load regulation
• Portable instrumentation power supplies

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized channels as this part may be obsolete or subject to supply constraints. Confirm RoHS compliance status and check for specific manufacturing date codes relevant to your assembly timeline. Ensure storage conditions meet moisture sensitivity level requirements prior to soldering.

DC DC Switching Controllers Selection Notes

Select this controller when designing buck converters requiring high current density without external shunt resistors. It is suitable for applications needing wide input voltage ranges compatible with single-cell lithium sources. Consider thermal management requirements due to the compact DFN footprint and high current capability.

DC DC Switching Controllers Part Context

This component belongs to the LTC3808 family of synchronous step-down controllers. It is designed to replace traditional resistor-sensing solutions, offering improved accuracy and board space savings. The device integrates high-side and low-side gate drivers for external MOSFETs.

DC DC Switching Controllers Replacement Considerations

LTC3808EDE#PBF serves as the direct replacement for the discontinued LTC3808EDE model. Verify pinout compatibility and ensure that any alternative components maintain the same 14-DFN package dimensions and electrical specifications.

DC DC Switching Controllers FAQ

Does the LTC3808EDE#PBF require an external current sense resistor?

No, the device utilizes internal current sensing technology, eliminating the need for an external sense resistor.

What is the maximum duty cycle supported by this controller?

The LTC3808EDE#PBF supports a maximum duty cycle of 100%.