LTC3829EFE

DC DC Switching Controllers Overview

The LTC3829EFE is a synchronous step-down switching controller from Analog Devices, designed for high-performance power management. It operates with a fixed switching frequency of 770 kHz and supports an output voltage range from 600 mV to 5 V. The device is capable of driving external N-channel MOSFETs to deliver up to 90 A of output current. It functions within an input supply voltage range of 4.5 V to 38 V. The component is housed in a 38-lead TSSOP package and is rated for operation across an extended temperature range from -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology with integrated control logic for driving all N-channel power MOSFET stages
• Fixed 770 kHz switching frequency architecture for optimized transient response and size reduction
• Wide operating input voltage range supporting diverse system power rails
• Integrated soft-start and tracking capabilities for controlled power-up sequences

DC DC Switching Controllers Applications

• High-density point-of-load (POL) conversion modules
• Central bus distribution architectures requiring multiple phases
• Industrial equipment power supplies
• Telecommunications infrastructure systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm package type and lead-free status. Ensure the procurement channel provides valid traceability for Analog Devices components. Confirm that the received part matches the exact marking code and date code requirements for your production timeline. Cross-reference the datasheet revision history to ensure compatibility with existing design specifications.

DC DC Switching Controllers Selection Notes

Select this controller when a fixed high-frequency operation is preferred over programmable options to simplify compensation network design. The 770 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 38-pin TSSOP package constraints regarding thermal dissipation and PCB layout space. Evaluate the 90 A current capability against the maximum load requirements of the target application.

DC DC Switching Controllers Part Context

This component belongs to the PolyPhase family of controllers, which are engineered for multi-phase parallel operation to increase current capacity while reducing input and output ripple. The LTC3829EFE serves as the central control unit, managing phase interleaving and load balancing among connected power stages. It is distinct from integrated power switches, providing only the gate drive signals.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers: None identified.