LTC1439CG#TRPBF

DC DC Switching Controllers Overview

The LTC1439CG#TRPBF is a dual synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 28V and supports output voltages including 3.3V and 5V. The device features a phase-lockable fixed frequency architecture with a maximum switching frequency of 400kHz. It provides two positive outputs with current capabilities up to 5A at 2.5V or 4A at 3.3V depending on the configuration. Key electrical parameters include a maximum duty cycle of 99% and a supply voltage range of 3.5V to 30V.

DC DC Switching Controllers Feature Summary

• Dual synchronous buck topology driving external N-channel power MOSFETs
• Phase-lockable fixed frequency architecture for EMI management
• Integrated soft-start and enable control for independent output sequencing

DC DC Switching Controllers Applications

• High efficiency dual-output step-down converters
• Industrial distributed power systems
• Automotive power regulation applications

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm package integrity for the 36-SSOP form factor. Ensure storage conditions meet moisture sensitivity level requirements. Cross-reference datasheet revisions for specific lot markings. Validate supplier authorization status before transaction completion.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring two isolated synchronous buck outputs from a single high-voltage rail. The phase-lockable feature allows synchronization to external clocks to minimize system noise. Verify thermal performance for the SSOP package under maximum load conditions. Ensure external MOSFET selection matches the drive capability and voltage ratings required for the target application.

DC DC Switching Controllers Part Context

This component belongs to the LTC1439 series of dual synchronous buck controllers. It is designed for applications demanding high efficiency and compact solution size. The device integrates control logic for driving external power stages, distinguishing it from integrated switch regulators. It serves as a core power management element in multi-rail systems.

DC DC Switching Controllers Replacement Considerations

LTC1439CG#PBF is listed as a direct substitute offering the same functionality in a tube package instead of tape and reel.