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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ DL 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck, Boost, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：2.6V
- Voltage - Input (Max)：50V
- Voltage - Output (Min/Fixed)：2.6V
- Voltage - Output (Max)：50V (Switch)
- Current - Output：1.35A (Switch), 2.1A (Switch)
- Frequency - Switching：100kHz ~ 2MHz
- Synchronous Rectifier：No
- 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 LT8471IUFD#TRPBF is a dual multitopology DC/DC controller manufactured by Analog Devices Inc. It integrates two independent 2A power switches and supports multiple converter topologies, including buck, boost, inverting, and SEPIC configurations. The device features an adjustable switching frequency ranging from 300 kHz to 2 MHz, allowing for optimization of efficiency and component size. It operates with an input voltage range of 2.7 V to 36 V and provides synchronized operation capability for parallel applications. The controller includes comprehensive protection features such as overcurrent protection, thermal shutdown, and soft-start functionality.
Feature Summary
- Dual independent channels supporting versatile multitopology configurations
- Integrated high-current 2A power switches for efficient power conversion
- Adjustable switching frequency for optimized design flexibility
- Synchronization capability for multi-phase or parallel operation
Applications
- Industrial automation systems requiring flexible power architectures
- Telecommunications infrastructure equipment
- Portable battery-powered devices needing multiple voltage rails
- Automotive electronics with varying input voltage ranges
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm that the IUFD package variant matches your PCB footprint requirements. Ensure compatibility with the intended switching frequency range and input voltage specifications for your application. Cross-reference the datasheet revision to confirm feature availability and electrical characteristics align with your design needs.
Selection Notes
Select this component when designing circuits requiring both buck and non-buck topologies within a single IC. Consider the 2A switch current limit against your maximum load requirements. Evaluate the need for synchronization if operating multiple units in parallel. Verify thermal performance capabilities given the integrated switch architecture and expected ambient conditions.
Part Context
The LT8471 belongs to Analog Devices' family of multitopology DC/DC controllers. It differs from standard buck-only controllers by offering flexibility to implement boost, inverting, and SEPIC circuits alongside traditional step-down configurations. This versatility reduces bill-of-materials count in designs requiring diverse voltage conversions from a common input source.
Replacement Considerations
LT8471EFE#PBF offers identical functionality in tube packaging instead of reel. LT8471EFE#TRPBF provides the same electrical performance in tape-and-reel format. Verify pinout compatibility and thermal characteristics when substituting between package types.
