LTC3789IGN#PBF

DC DC Switching Controllers Overview

The LTC3789IGN#PBF is a high-efficiency, synchronous, four-switch buck-boost controller manufactured by Analog Devices Inc. It operates with an input voltage range of 2.7V to 36V and supports output voltages from 0.8V to 36V. The device features a fixed switching frequency of 500kHz and delivers up to 10A of continuous output current per phase when paired with external MOSFETs. It utilizes a 28-lead SSOP package and functions within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Synchronous four-switch topology enabling efficient step-up, step-down, and buck-boost operation across wide input-output differential ranges.
• Integrated hiccup mode protection for short-circuit and overload conditions to prevent thermal damage during fault events.
• Dual-phase architecture allowing scalable current capability through parallel operation of multiple controllers.

DC DC Switching Controllers Applications

• Battery-powered systems requiring stable output during discharge cycles
• Industrial power management modules
• Telecommunications equipment power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix IGN#PBF against the official datasheet to confirm the SSOP-28 package and commercial temperature grade. Ensure compatibility with external gate drive components and inductors selected for the 500kHz operating frequency. Confirm RoHS compliance status via the manufacturer's latest environmental declaration before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when designing circuits that require seamless transition between buck and boost modes without discontinuous conduction issues. Consider the 500kHz switching frequency for balancing efficiency and passive component size. Evaluate thermal performance requirements given the SSOP-28 package limitations for high-current applications.

DC DC Switching Controllers Part Context

This part belongs to the LTC3789 family of high-voltage, high-current controllers designed for demanding power management applications. It serves as a core control element in complex DC-DC conversion stages where input voltage variability exceeds standard buck or boost regulator capabilities.

DC DC Switching Controllers Replacement Considerations

LTC3789EGN#PBF

DC DC Switching Controllers FAQ

What is the maximum input voltage supported by the LTC3789?

The LTC3789 supports a maximum input voltage of 36V.

Does the LTC3789 include internal switches?

No, it is a controller that requires external N-channel MOSFETs for the four-switch buck-boost topology.