LTC3780IG#PBF

DC DC Switching Controllers Overview

The LTC3780IG#PBF is a high-efficiency, synchronous four-switch buck-boost controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 36V and supports output voltages from 800mV to 30V. The device delivers up to 10A of output current with a switching frequency adjustable between 200kHz and 400kHz. It features a QFN-32 package, operates within a temperature range of -40°C to +125°C, and includes control characteristics such as current limit, enable, power good, and soft start.

DC DC Switching Controllers Feature Summary

• Synchronous four-switch topology enables efficient operation across wide input-to-output voltage differentials
• Integrated control logic manages external N-channel MOSFETs for both step-down and step-up modes
• Programmable switching frequency allows optimization for specific efficiency and size requirements
• Built-in protection features include cycle-by-cycle current limiting and thermal shutdown

DC DC Switching Controllers Applications

• Automotive DC/DC converters for battery-powered systems
• Industrial power supplies requiring wide input voltage ranges
• Avionics power management modules
• Portable equipment with varying source voltages

DC DC Switching Controllers Procurement Notes

Verify the suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the IG suffix corresponds to the industrial temperature grade (-40°C to +125°C). Ensure the QFN-32 package variant matches your PCB footprint requirements. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates prior to final design approval.

DC DC Switching Controllers Selection Notes

Select this controller when designing circuits that must handle input voltages both higher and lower than the regulated output. It is suitable for applications demanding high efficiency across broad load and line conditions. Consider the external component selection for inductors and capacitors based on the desired switching frequency and current ripple specifications to ensure stable operation.

DC DC Switching Controllers Part Context

The LTC3780 belongs to Analog Devices' family of high-performance switching regulators. It serves as a controller rather than an integrated power stage, requiring external MOSFETs. This architecture allows designers to optimize efficiency and thermal performance by selecting components tailored to specific current and voltage levels, distinguishing it from fully integrated monolithic solutions.

DC DC Switching Controllers Replacement Considerations

LT3790EFE-1

DC DC Switching Controllers FAQ

What is the maximum switching frequency supported by the LTC3780?

The switching frequency is programmable and can be set up to 400kHz.

Does the LTC3780 support clock synchronization?

No, the device does not feature a clock sync input; it operates with its own internal oscillator.