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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 100MA 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3.4V
- Voltage - Input (Max)：60V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：100mA
- Frequency - Switching：200kHz ~ 2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x2)
- Grade：-
- Qualification：-
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Overview
The LT8618JDDB-3.3#TRPBF is a high-efficiency, synchronous buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.4V to 60V and provides a fixed output voltage of 3.3V at up to 100mA. The device features a programmable switching frequency from 200kHz to 2.2MHz and draws only 1.7µA of quiescent current. Packaged in a compact 10-WFDFN (3x2) surface-mount case, it supports junction temperatures from -40°C to 125°C.
Feature Summary
- Synchronous rectification architecture for improved efficiency
- Wide 60V input voltage capability for industrial applications
- Low quiescent current consumption for battery-powered systems
- Programmable switching frequency for EMI optimization
Applications
- Industrial control systems requiring isolated or non-isolated power rails
- Battery-operated equipment needing extended runtime
- Distributed power architectures in automotive environments
- Point-of-load regulation for microprocessors and FPGAs
Procurement Notes
Verify the exact suffix against official Analog Devices documentation. The #TRMPBF designation indicates tape-and-reel packaging, while #TRPBF may denote cut-tape or reel variations depending on distributor interpretation. Confirm RoHS compliance and lead times directly with authorized suppliers, as availability varies by region and lot.
Selection Notes
Select this component when a wide input voltage range up to 60V is required alongside low standby current. The fixed 3.3V output simplifies design for standard logic levels. Ensure the thermal performance of the 10-DFN package meets system requirements under maximum load conditions. Verify that the chosen switching frequency aligns with external component selection for stability.
Part Context
This part belongs to the LT8618 family of high-voltage synchronous buck converters. It shares architectural similarities with other members like the LT8618IDDB-3.3#TRMPBF but differs in specific suffixes indicating packaging or testing variants. The family targets applications demanding high efficiency and small footprint in harsh electrical environments.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices application notes for potential cross-references within the LT/ADP series based on specific electrical requirements.
