ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG CTRLR BUCK-BOOST 38QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：2.8V ~ 80V
- Frequency - Switching：100kHz ~ 400kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：38-WFQFN Exposed Pad
- Supplier Device Package：38-QFN (5x7)
Download product information
Overview
The LT8705EUHF#PBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices, designed for high-performance power management. It supports an input voltage range of 2.8V to 80V and delivers up to 10A output current. The device operates with a switching frequency between 100kHz and 400kHz and features integrated feedback loops for input/output voltage and current regulation. Packaged in a 38-QFN (5x7mm) surface-mount format, it functions within a temperature range of -40°C to +125°C.
Feature Summary
- Synchronous four-switch topology enabling seamless transition between buck, boost, and pass-through modes
- Integrated closed-loop control for input voltage, input current, output voltage, and output current
- Clock synchronization capability for multi-phase or parallel system expansion
Applications
- Industrial automation power supplies
- Telecommunications infrastructure equipment
- Battery-powered systems requiring wide input voltage ranges
- Supercapacitor backup power circuits
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors. Confirm package integrity upon receipt. Check RoHS compliance documentation. Ensure storage conditions meet manufacturer specifications to prevent moisture damage prior to reflow soldering.
Selection Notes
Select this controller when input voltages vary significantly above, below, or equal to the required output level. Ideal for applications demanding precise current limiting and soft-start capabilities. Consider thermal performance and external component selection for optimal efficiency at high load currents.
Part Context
Part of the LT8705 family, which includes variants like LT8705EFE and LT8705AIUHF. These share core buck-boost functionality but differ in packaging, temperature grades, and specific electrical characteristics. The EUHF variant specifically utilizes a QFN package for compact board space utilization.
Replacement Considerations
LT8705EFE#PBF offers similar functionality in a TSSOP-EP package. LT8705IUHF provides comparable performance in a QFN package. Verify pin compatibility and thermal requirements before substitution.
