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LTC3731CUH#PBF is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC REG CTRLR BUCK 32QFN. Review the specifications below when checking this part for your BOM.
DC DC Switching Controllers specifications for LTC3731CUH#PBF
- Description：IC REG CTRLR BUCK 32QFN
- Series：PolyPhase®
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：3
- Output Phases：3
- Voltage - Supply (Vcc/Vdd)：3.8V ~ 7V
- Frequency - Switching：225kHz ~ 680kHz
- Duty Cycle (Max)：98.50%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Phase Control, Power Good, Soft Start
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
- Grade：-
- Qualification：-
DC DC Switching Controllers datasheet and documents for LTC3731CUH#PBF
DC DC Switching Controllers Overview
The LTC3731CUH#PBF is a PolyPhase three-phase synchronous buck switching regulator controller manufactured by Analog Devices Inc. It operates with a fixed switching frequency of 600kHz and supports input voltages ranging from 4.5V to 32V. The device drives all N-channel external power MOSFET stages within a lockable fixed-frequency architecture. It features a 5mm x 5mm QFN package designed to minimize supply footprint size and improve thermal performance in high-current applications.
DC DC Switching Controllers Feature Summary
- PolyPhase three-phase control architecture for high current density
- Fixed 600kHz switching frequency operation
- Drives all N-channel external power MOSFETs
- Lockable fixed-frequency phase synchronization
DC DC Switching Controllers Applications
- High current step-down PolyPhase converters
- Industrial distributed power systems
- Telecommunications power supplies
DC DC Switching Controllers Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS status. Confirm the CUH designation corresponds to the commercial temperature range and 5mm x 5mm QFN package. Ensure compatibility with the intended PCB footprint and thermal requirements before finalizing procurement orders.
DC DC Switching Controllers Selection Notes
Select this component when designing multi-phase buck converters requiring high efficiency and compact board space. The fixed 600kHz frequency allows for smaller passive components compared to lower frequency alternatives. Ensure the application requires driving multiple phases of N-channel MOSFETs for load currents exceeding single-phase capabilities.
DC DC Switching Controllers Part Context
This part belongs to the LTC3731 family of PolyPhase controllers, which are engineered for high-performance DC/DC conversion. The CUH variant specifically denotes the commercial temperature grade and the compact QFN packaging, distinguishing it from automotive or industrial temperature grades available in different packages like SSOP.
DC DC Switching Controllers Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation.
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