LTC3729LEUH-6#TRPBF

DC DC Switching Controllers Overview

The LTC3729LEUH-6#TRPBF is a synchronous step-down switching regulator controller from Analog Devices, housed in a 32-pin QFN package. It operates with an input voltage range of 4 V to 30 V and delivers up to 40 A output current. The device features a fixed switching frequency of 550 kHz and supports output voltages between 600 mV and 5 V. It includes shutdown functionality and maintains a load regulation of 0.1%. The quiescent supply current is 470 uA, and it functions within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Polyphase synchronous step-down current mode switching regulator controller
• Drives N-channel external power MOSFET stages in a phase-lockable architecture
• Integrated 0.6V reference voltage for precise output regulation

DC DC Switching Controllers Applications

• Multi-phase power delivery systems
• High-current DC-to-DC conversion applications
• Embedded systems requiring synchronized clock architectures

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the LEUH variant matches the required thermal and pinout specifications for your PCB layout. Ensure compatibility with the 0.6V reference requirement for downstream load lines. Cross-reference the manufacturer's latest datasheet for any updates on RoHS compliance or material declarations prior to final procurement.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring high current capability with multi-phase synchronization. The fixed 550 kHz frequency allows for optimized passive component sizing. Consider the 32-pin QFN footprint for thermal management requirements. Verify that the external MOSFET selection aligns with the controller's drive capabilities and the 4 V to 30 V input range constraints.

DC DC Switching Controllers Part Context

This part belongs to the LTC3729L-6 series, designed as a polyphase controller rather than an integrated regulator. It differs from single-output controllers by supporting multiple phases for higher current handling. The LEUH designation specifies the specific package type and thermal characteristics suitable for dense board layouts.

DC DC Switching Controllers Replacement Considerations

Check for direct substitutes within the LTC3729 family, such as the LTC3729EUH#PBF, noting differences in packaging (tube vs. reel) and potential minor electrical parameter variations. Ensure any replacement maintains the 0.6V reference and 550 kHz frequency requirements.