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LTC3728LIUH#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 LTC3728LIUH#PBF
- Description：IC REG CTRLR BUCK 32QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 28V
- Frequency - Switching：260kHz ~ 550kHz
- Duty Cycle (Max)：99.40%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Power Good, Soft Start
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
DC DC Switching Controllers datasheet and documents for LTC3728LIUH#PBF
DC DC Switching Controllers Overview
The LTC3728LIUH#PBF is a dual high-performance step-down switching regulator controller from Analog Devices. It drives all N-channel synchronous power MOSFET stages for two independent outputs. The device supports an input voltage range of 5.2V to 28V and provides output voltages of 3.3V or 5V with up to 5A current capability per channel. Operating at a fixed frequency of 550kHz, it utilizes a constant frequency current mode architecture. The component is housed in a 32-pin QFN EP package and is rated for operation within the -40°C to 85°C temperature range.
DC DC Switching Controllers Feature Summary
- Dual high-performance step-down switching regulator controller architecture
- Drives all N-channel synchronous power MOSFET stages
- Constant frequency current mode control for stable regulation
DC DC Switching Controllers Applications
- Industrial equipment power distribution
- Telecommunications infrastructure systems
- Embedded computing platforms requiring dual rails
DC DC Switching Controllers Procurement Notes
Verify the specific suffix 'LIUH' against the official Analog Devices datasheet to confirm automotive qualification status and pinout compatibility. Ensure the ordering part number matches the exact package type and temperature rating required for the target application environment before finalizing procurement.
DC DC Switching Controllers Selection Notes
Select this controller when designing dual-output buck converters requiring high efficiency and precise current mode control. It is suitable for applications needing independent regulation of two voltage rails from a single wide-input voltage source. Consider external component selection for inductors and capacitors based on the 550kHz switching frequency requirements.
DC DC Switching Controllers Part Context
This component belongs to the LTC3728L family of dual synchronous step-down controllers. It shares architectural similarities with other members like the LTC3728IUH but differs in specific electrical characteristics and qualification grades. The family is designed for versatile DC/DC conversion tasks in demanding environments.
DC DC Switching Controllers Replacement Considerations
The LTC3728IUH is a related non-automotive grade variant within the same product family. Verify functional equivalence and package compatibility before substitution.
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