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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 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)：3.3V
- Voltage - Output (Max)：-
- Current - Output：3A
- Frequency - Switching：200kHz ~ 2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
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Overview
The LT8609AJDDM-3.3#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It features a fixed 3.3V output with a maximum continuous current of 3A and a peak current capability of 3A. The device supports an input voltage range from 3V to 42V. It operates at a programmable switching frequency between 200kHz and 2.2MHz. The component is housed in a 10-WFDFN package with exposed pad, measuring 3x3mm. It is rated for junction temperatures up to 150°C.
Feature Summary
- Integrated synchronous rectification for high efficiency
- Programmable switching frequency for optimization
- Compact surface-mount packaging design
Applications
- Industrial power supply systems
- Distributed power architectures
- Point-of-load regulation modules
Procurement Notes
Verify the specific suffix 'AJDDM' indicates automotive grade qualification when sourcing. Confirm the '#PBF' designation ensures lead-free compliance. Cross-reference the exact part number against official Analog Devices documentation to ensure compatibility with required thermal and electrical specifications before procurement.
Selection Notes
Select this variant for applications requiring a fixed 3.3V rail with high current capacity. The automotive-grade designation suggests suitability for harsh environments. Consider the 3A output limit and 42V input range against system requirements. Evaluate the 10-WFDFN footprint for PCB layout constraints.
Part Context
This component belongs to the LT8609 family of synchronous buck regulators. It shares core topology with other variants but differs in temperature rating and output configuration. The AJDDM suffix distinguishes it from standard commercial grades, indicating enhanced reliability standards within the Analog Devices PMIC portfolio.
Replacement Considerations
LT8609AJDDM-5#TRPBF offers similar performance with a 5V fixed output. LT8609EDDM-3.3#PBF provides equivalent functionality in commercial grade. Verify pinout and thermal characteristics when substituting.
