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Product Detailed Parameters
- Description：IC REG BUCK 5V 3A 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Current - Output：3A
- Frequency - Switching：200kHz ~ 2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LT8609AEDDM-5#PBF is a synchronous step-down switching regulator from Analog Devices, housed in a 10-pin DFN package. It operates with an input voltage range of 3V to 42V and provides a fixed 5V output at up to 3A. The device features a low quiescent current of 2.5µA and supports adjustable switching frequencies between 200kHz and 2.2MHz. It functions within a junction temperature range of -40°C to +125°C and includes shutdown capabilities for power management.
Feature Summary
- Synchronous buck topology for high efficiency
- Low quiescent current operation
- Adjustable switching frequency range
- Integrated shutdown control
Applications
- Automotive always-on systems
- Industrial point-of-load regulation
- Battery-powered equipment
- Distributed DC power systems
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm availability status as supply may be limited or restricted. Ensure the fixed 5V output variant matches the design requirement, distinguishing it from adjustable versions. Check RoHS compliance documentation for regulatory adherence.
Selection Notes
Select this component for applications requiring a fixed 5V rail from higher voltage inputs up to 42V. The 3A continuous current capability suits moderate load requirements. Consider the thermal performance of the DFN-10 package for heat dissipation needs. Verify that the required switching frequency falls within the 200kHz to 2.2MHz operational window.
Part Context
This part belongs to the LT8609 family of micro-power synchronous buck regulators. It shares architectural similarities with other variants like the LT8609AJDDM-5#PBF but differs in operating temperature specifications and packaging options. The series is designed for compact, high-efficiency power conversion solutions.
Replacement Considerations
LT8609AJDDM-5#PBF offers similar functionality with an extended maximum junction temperature rating of 150°C compared to the 125°C limit of the LT8609AEDDM-5#PBF.
