LTC3850EUF#TRPBF

DC DC Switching Controllers Overview

The LTC3850EUF#TRPBF is a dual-channel, two-phase synchronous step-down switching controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 24V and supports output voltages from 800mV to 6V. The device delivers up to 25A per channel with a typical switching frequency of 500kHz, adjustable between 250kHz and 780kHz. It features a quiescent current of 30µA and operates at temperatures from -40°C to +85°C. Packaged in a 28-lead QFN (4mm x 5mm) tube format.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture with 180-degree phase shift to minimize input capacitance and power supply noise
• OPTI-LOOP compensation for optimized transient response across wide output capacitance and ESR ranges
• Flexible operation modes including Burst Mode, pulse skipping, and continuous inductor current via MODE/PLLIN pin
• Integrated protection features including output overvoltage protection, soft start, and current foldback

DC DC Switching Controllers Applications

• Laptop and notebook computer power systems
• Portable instrument power supplies
• Battery-powered digital devices
• DC power distribution systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging configuration distinct from tube variants. Confirm the operating temperature grade corresponds to the 'E' designation for commercial range applications. Ensure compatibility with the required 28-pin QFN footprint dimensions during PCB layout verification.

DC DC Switching Controllers Selection Notes

Select this component when dual independent buck channels are required with high efficiency and low standby current. The wide input voltage range suits various battery chemistries and intermediate bus architectures. Consider the OPTI-LOOP feature if output capacitance values vary significantly across different system configurations.

DC DC Switching Controllers Part Context

This part belongs to the LTC3850 series of high-performance synchronous step-down controllers. It is designed to drive all N-channel power MOSFET stages using a constant-frequency current mode architecture. The series includes variants with different packages and temperature grades, such as SSOP and other QFN options.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative dual-channel synchronous buck controllers from other manufacturers.