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Product Detailed Parameters
- Description：80V SYNCHRONOUS 4-SWITCH BUCK-BO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：1
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：2.8V ~ 80V
- Frequency - Switching：100kHz ~ 400kHz
- Duty Cycle (Max)：80%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：-
- Operating Temperature：-40°C ~ 150°C
- Mounting Type：Surface Mount
- Package / Case：40-WFQFN Exposed Pad
- Supplier Device Package：40-QFN (5x8)
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Overview
The LT8708HUHG-1#TRPBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices, designed for high-performance power conversion. It operates with an input voltage range of 2.8 V to 80 V and supports switching frequencies up to 400 kHz. The device features a maximum duty cycle of 80% and utilizes a 40-WFQFN exposed pad package. Qualified under AEC-Q100 standards, it functions within a temperature range of -40°C to +150°C. This component serves as the slave chip in multi-phase configurations, providing good current matching to the average output current of the primary LT8708 controller.
Feature Summary
- Synchronous four-switch buck-boost topology for efficient step-up and step-down regulation
- Wide input voltage capability ranging from 2.8 V to 80 V
- Slave controller function enabling parallel operation with primary LT8708 units
- Automotive-grade qualification ensuring reliability in harsh environments
Applications
- Industrial power supplies requiring wide input voltage ranges
- Automotive electronics systems meeting AEC-Q100 standards
- Multi-phase power delivery systems utilizing master-slave controller configurations
- Battery-powered equipment needing efficient buck-boost conversion
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the HUHG variant meets automotive qualification requirements if applicable. Ensure compatibility with the primary LT8708 controller for phase synchronization. Check current availability status as supply may be limited or subject to factory orders. Validate package dimensions against PCB footprint specifications before finalizing procurement.
Selection Notes
Select this component when a slave controller is required for multi-phase buck-boost applications. It is suitable for designs demanding input voltages exceeding or falling below output levels. Consider the 40-pin QFN package for space-constrained layouts. Ensure thermal management supports the specified operating temperature range. Verify clock synchronization capabilities match system timing requirements.
Part Context
This part belongs to the LT8708 family of high-performance buck-boost controllers. It specifically functions as the slave unit in dual-controller setups. The LT8708 series is engineered for applications requiring robust voltage regulation across varying input conditions. The HUHG designation typically signifies automotive-grade qualification and enhanced reliability features compared to standard industrial variants.
Replacement Considerations
LT8708HUHG-1#WPBF is a verified alternative offering identical electrical characteristics in tube packaging instead of tape-and-reel. LT8708HUHG-1#PBF provides the same functionality in tube format. Ensure packaging preferences are aligned with automated assembly processes when substituting.
