LTC3850EUFD#PBF

DC DC Switching Controllers Overview

The LTC3850EUFD#PBF is a dual, two-phase synchronous step-down switching controller from Analog Devices. It drives all N-channel power MOSFET stages with a constant-frequency current mode architecture supporting phase-lockable frequencies up to 780kHz. The device operates with an input voltage range of 4V to 24V and provides independent outputs adjustable from 800mV to 6V. Key electrical parameters include a typical quiesient current of 30µA in sleep mode and a maximum operating supply current of 850µA. It features OPTI-LOOP compensation for optimized transient response across various output capacitance values.

DC DC Switching Controllers Feature Summary

• Dual channel operation with 180-degree phase shift to minimize input capacitor requirements and supply noise
• OPTI-LOOP compensation allows transient response optimization over a wide range of output capacitance and ESR values
• Independent TRACK/SS pins enable programmable soft-start ramping or tracking of output voltages during startup

DC DC Switching Controllers Applications

• DC power distribution systems
• Battery operated digital devices
• Portable instruments

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure compatibility with external MOSFET gate drive requirements and input voltage specifications before integration. Cross-reference the datasheet revision date to validate parameter accuracy for design-in purposes.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring high-efficiency dual-rail power generation from a single input source. The fixed frequency architecture supports synchronization to external clocks, reducing electromagnetic interference through phase alignment. Consider the thermal performance of the QFN package when designing PCB layouts for continuous high-current loads.

DC DC Switching Controllers Part Context

This part belongs to the LTC3850 family of dual synchronous step-down controllers. It shares architectural similarities with the LTC3850-1 but differs in specific frequency ranges and operational limits. The EUFD suffix indicates a specific QFN package variant designed for surface-mount assembly.

DC DC Switching Controllers Replacement Considerations

LTC3850IGN#PBF