LTC3779HFE#PBF

DC DC Switching Controllers Overview

The LTC3779HFE#PBF is a Buck-Boost switching controller from Analog Devices, designed for wide input and output voltage ranges. It operates with a supply voltage of 4.5 V to 150 V and supports output voltages from 1.2 V to 150 V. The device features a programmable switching frequency ranging from 50 kHz to 600 kHz and delivers an output current capability of 10 A. It utilizes a synchronous rectifier architecture within a TSSOP-38 package. The component supports isolated topologies and includes a precision 1.2 V voltage reference. Operating temperatures extend up to +150 °C for the H-grade variant.

DC DC Switching Controllers Feature Summary

• Implements a four-switch current mode single inductor buck-boost architecture for efficient power conversion across varying input conditions.
• Features a 36 V EXTVCC LDO power driver with programmable DRVCC voltage optimization to enhance efficiency.
• Supports pulse skip mode for high light-load efficiency or forced continuous mode for noise-sensitive applications.
• Includes PLLIN pin functionality allowing synchronization with an external clock source.

DC DC Switching Controllers Applications

• Telecommunications systems requiring wide input range regulation
• Avionics power management units
• Automotive electronic control modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape and tube packaging configuration. Confirm the H-grade designation corresponds to the extended temperature range specifications required by your design environment. Ensure compatibility with the 38-pin TSSOP footprint during PCB layout verification.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems necessitating a wide input voltage span up to 150 V combined with high output current requirements. Consider the thermal performance of the TSSOP-38 package relative to the expected load profile. Evaluate the need for external synchronization via the PLLIN pin if system noise immunity is critical.

DC DC Switching Controllers Part Context

This component belongs to the LTC3779 family of Buck-Boost controllers manufactured by Analog Devices. It serves as a core power management integrated circuit (PMIC) within the broader portfolio of DC-DC switching controllers. The part is categorized under Power Management ICs and specifically addresses applications demanding flexible voltage conversion capabilities.

DC DC Switching Controllers Replacement Considerations

Consult official documentation for verified substitute part numbers. Cross-reference pinouts and electrical parameters carefully before substitution.