LTC3728LIUH-1#PBF

Description：IC REG CTRLR BUCK 32QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:60dd79a59b9e Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

LTC3728LIUH-1#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-1#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 ~ 35V
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-1#PBF

LTC3728LIUH-1#PBF

DC DC Switching Controllers Overview

The LTC3728LIUH-1#PBF is a dual high-performance step-down switching regulator controller designed to drive all N-channel synchronous power MOSFET stages. It features a constant frequency current mode architecture with a phase-lockable switching frequency of up to 550kHz. The device supports an input voltage range from 7V to 28V and provides two independent output channels, typically configured for 3.3V at 5A and 5V at 4A. It operates within an ambient temperature range of -40°C to +85°C and is housed in a 32-pin QFN EP package.

DC DC Switching Controllers Feature Summary

Dual channel architecture driving N-channel synchronous power MOSFETs
Constant frequency current mode control with external synchronization capability
Integrated soft start, enable, and power good monitoring functions

DC DC Switching Controllers Applications

High efficiency dual rail power supplies
Industrial equipment power distribution
Telecommunications infrastructure regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'L' indicates automotive qualification requirements against the official Analog Devices datasheet. Confirm the 32-pin QFN EP package dimensions match the target PCB footprint. Ensure the selected external components support the 550kHz switching frequency and specified current ratings for reliable operation.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated or non-isolated buck rails are required from a single input source. The external synchronization feature allows alignment with other system clocks to minimize EMI. Verify that the application requires N-channel MOSFETs and can accommodate the necessary gate drive voltages provided by the controller.

DC DC Switching Controllers Part Context

This part belongs to the LTC3728L family of dual synchronous buck controllers. It shares architectural similarities with the standard LTC3728 but includes specific enhancements for automotive environments. The '-1' suffix denotes a specific pinout or configuration variant within the broader product line.