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 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4V ~ 60V
- Frequency - Switching：190kHz ~ 630kHz
- Duty Cycle (Max)：95%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Current Limit, Frequency Control, 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：-
Download product information
Overview
The LT8390EUFD#TRPBF is a synchronous 4-switch buck-boost DC/DC controller from Analog Devices Inc., housed in a 28-QFN (4x5) package. It supports an input voltage range of 4V to 60V and regulates output voltage, input current, or output current when the input is above, below, or equal to the output. The device features a fixed switching frequency range of 190kHz to 630kHz, with spread spectrum capability for EMI reduction. It includes control features such as current limit, frequency control, slope compensation, and soft start. The operating junction temperature range is -40°C to 125°C.
Feature Summary
- Synchronous 4-switch buck-boost topology supporting pass-through operation
- Proprietary peak-buck/peak-boost current mode control scheme
- Integrated spread spectrum modulation for low EMI performance
- Supports clock synchronization for multi-phase or parallel applications
Applications
- Solar panel to battery charger systems
- Industrial distributed power supplies
- Automotive electronics requiring wide input voltage ranges
- Battery-powered equipment with varying source voltages
Procurement Notes
Verify the exact suffix TRPBF indicates tape and reel packaging when ordering. Confirm that the EUFD variant specifically includes spread spectrum functionality compared to standard LT8390 models. Ensure compatibility with your ECAD tools using the provided model files. Check for any recent PCN updates regarding assembly or material changes before finalizing procurement plans.
Selection Notes
Select this component when input voltage varies significantly relative to the output voltage, including scenarios where Vin equals Vout. The spread spectrum feature is critical for applications sensitive to EMI noise floors. Consider the 28-QFN package size for space-constrained designs. Evaluate thermal requirements based on the 125°C junction temperature rating and expected load conditions.
Part Context
The LT8390 series represents Analog Devices' solution for high-efficiency buck-boost conversion without the switching noise associated with traditional inverting topologies. The EUFD variant distinguishes itself by incorporating spread spectrum technology to minimize electromagnetic interference. This places it within the broader PMIC category focused on robust power management for industrial and automotive environments.
Replacement Considerations
Standard LT8390 variants may lack the spread spectrum feature found in the EUFD version. Verify if alternative controllers offer similar 4-switch topologies with comparable frequency ranges. Ensure pinout compatibility if substituting with other buck-boost controllers from different manufacturers.
