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 BUCK ADJ 5A 20QFN
- Series：Silent Switcher®1
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3.4V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.97V
- Voltage - Output (Max)：42V
- Current - Output：5A
- Frequency - Switching：210kHz ~ 2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：20-WFQFN, 18 Leads, Exposed Pad
- Supplier Device Package：20-QFN (3x4)
- Grade：-
- Qualification：-
Download product information
Overview
The LT8640EUDCF-1#TRPBF is a synchronous step-down switching regulator from Analog Devices, featuring Silent Switcher technology. It operates with an input voltage range of 2.9 V to 42 V and delivers up to 5 A of output current. The device supports adjustable output voltages from 0.97 V to 41.58 V. Its switching frequency is programmable between 200 kHz and 3 MHz. Quiescent current is specified at 1.7 uA during operation and 2.5 uA in standby. The component is housed in a QFN-18 package and functions within a temperature range of -40°C to +125°C.
Feature Summary
- Integrates Silent Switcher architecture to minimize electromagnetic interference emissions without external shielding.
- Provides high-efficiency synchronous buck regulation with integrated power MOSFETs for compact designs.
- Features low quiescent current consumption to extend battery life in portable applications.
- Supports wide input voltage ranges suitable for various industrial and automotive power rails.
Applications
- Industrial point-of-load regulation
- Automotive always-on systems
- Battery-powered digital devices
- Distributed DC power systems
Procurement Notes
Verify the specific suffix '-1' against official Analog Devices documentation to confirm pinout or functional variations compared to standard LT8640 variants. Ensure compatibility with required thermal management solutions for the QFN-18 package. Confirm RoHS compliance status through the manufacturer's latest environmental declarations before finalizing procurement specifications.
Selection Notes
Select this component when designing systems requiring high current density and strict EMI constraints. The wide input voltage range accommodates unregulated sources or single-cell lithium batteries. Consider the programmable switching frequency to optimize efficiency versus component size trade-offs. Verify that the selected inductor and capacitor values support the desired ripple and transient response requirements.
Part Context
This part belongs to the LT8640 family of Silent Switcher regulators, designed for high-performance power management. The series integrates advanced noise reduction techniques into a small footprint. It targets applications where space is limited and electromagnetic compatibility is critical. The family offers various packages and temperature grades to suit diverse industrial needs.
Replacement Considerations
LT8640EUDCF#TRPBF: Standard variant without the '-1' suffix; verify if functional differences exist.
FAQ
What is the maximum input voltage for the LT8640EUDCF-1#TRPBF?
The maximum input voltage is 42 V.
Does this regulator include internal Schottky diodes?
No, it uses synchronous rectification with internal N-channel MOSFETs instead of diodes.
