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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 100MA 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 LT8618EDDB-3.3#TRPBF is a synchronous step-down DC/DC converter manufactured by Analog Devices Inc., designed for high-efficiency power conversion in compact spaces. This device operates with an input voltage range of 3.4V to 60V and provides a fixed output voltage of 3.3V at a maximum continuous output current of 100mA. It features an adjustable switching frequency ranging from 200kHz to 2.2MHz, allowing optimization for efficiency or transient response. The IC exhibits a low quiescent current of 1.7µA, enhancing battery life in portable applications. It is housed in a thermally enhanced 10-lead DFN package (3mm x 2mm) suitable for surface mount assembly.
Feature Summary
- Integrated synchronous rectification for improved efficiency across load ranges
- Wide input voltage capability supporting direct connection to various bus voltages
- Adjustable switching frequency allows customization for specific design constraints
- Low quiescent current operation extends battery life in standby modes
Applications
- Portable instrumentation and handheld devices
- Industrial control systems requiring isolated or non-isolated power rails
- Automotive electronics operating within wide voltage fluctuations
- Communication equipment needing stable low-noise power supplies
Procurement Notes
Verify the exact suffix against official Analog Devices documentation, as variations such as TRMPBF may indicate different packaging or temperature grades. Confirm RoHS compliance status through the manufacturer's latest declaration. Ensure the ordering part number matches the required package type and thermal performance specifications for your PCB layout.
Selection Notes
Select this component when a wide input voltage range up to 60V is required alongside a compact footprint. The fixed 3.3V output simplifies design for standard logic levels. Consider the adjustable frequency feature if EMI filtering needs to be shifted away from critical bands. Evaluate thermal requirements based on the DFN package's heat dissipation capabilities under expected load conditions.
Part Context
This part belongs to the LT8618 family of high-voltage synchronous buck converters. The series is characterized by its ability to handle high input voltages while maintaining small solution sizes. The EDDB suffix typically denotes the specific package variant and temperature rating, distinguishing it from other pin-compatible or functionally similar parts in the broader power management portfolio.
Replacement Considerations
LT8618IDDB-3.3#TRMPBF is a verified substitute offering identical electrical functionality with potential differences in packaging or temperature grade.
