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Product Detailed Parameters
- Description：IC REG CTRLR BOOST 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：6V ~ 40V
- Frequency - Switching：154kHz ~ 465kHz
- Duty Cycle (Max)：94%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Reset, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-WFQFN Exposed Pad
- Supplier Device Package：28-QFN (4x5)
- Grade：-
- Qualification：-
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Overview
The LT3782AIUFD#PBF is a current mode 2-phase step-up DC/DC converter controller manufactured by Analog Devices Inc. It operates within a 6V to 40V input voltage range and supports programmable switching frequencies from 150kHz to 500kHz. The device features a 10V gate drive with a 4A peak drive current, enabling efficient control of industrial-grade high-power MOSFETs. It is housed in a thermally enhanced 28-lead QFN package measuring 4mm × 5mm. Key electrical characteristics include synchronous gate signals with programmable falling edge delay to prevent cross-conduction, along with integrated soft-start, current limit, duty cycle clamp, and slope compensation functions.
Feature Summary
- Two-phase operation reduces required input and output capacitance and inductance requirements
- Tighter current sense mismatch tolerance compared to the standard LT3782 model
- Synchronous gate signals with programmable falling edge delay for external MOSFET driver applications
Applications
- Industrial power supply systems requiring high efficiency
- Battery-powered equipment utilizing boost conversion topologies
- Telecommunications infrastructure power management
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm package integrity and pin alignment upon receipt. Review the official datasheet for handling precautions related to the QFN thermal pad. Ensure storage conditions comply with moisture sensitivity levels specified in the manufacturer documentation to maintain reliability during soldering processes.
Selection Notes
Select this controller when system design demands reduced passive component size through two-phase interleaving. Choose the AI suffix variant specifically if tighter current sense matching is required for precise load balancing between phases. Ensure the application input voltage remains within the 6V to 40V window. Verify that the external MOSFETs can withstand the 10V gate drive level provided by the VCC pin for optimal performance.
Part Context
This component belongs to the LT3782A series of step-up DC/DC controllers. It shares functional similarities with the LT3782 but offers improved current sense mismatch tolerance. The part is designed to complement other PMIC solutions from Analog Devices, providing a robust foundation for high-power boost applications where efficiency and component count are critical constraints.
Replacement Considerations
The LT3782AIUFD#TR serves as the tape-and-reel alternative to the tube-packaged LT3782AIUFD#PBF. Direct substitution requires verifying package compatibility and ensuring the manufacturing lot meets specific quality standards. Cross-reference with the LT3782 only if relaxed current sense mismatch tolerances are acceptable for the target application.
