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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 10DFN
- Series：-
- 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)：3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.782V
- Voltage - Output (Max)：42V
- 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 LT8609AHDDM#TRPBF is a synchronous step-down switching regulator from Analog Devices, designed for high-efficiency power conversion. It operates with an input voltage range of 3 V to 42 V and delivers a continuous output current of 2 A with a 3 A peak capability. The device features an adjustable output voltage and supports switching frequencies between 200 kHz and 2.2 MHz. It incorporates a low quiescent current of 1.7 uA and functions within a temperature range of -40°C to +150°C. The component is housed in a compact 10-DFN (3x3) package with exposed pad.
Feature Summary
- Synchronous buck topology providing high efficiency across wide load ranges
- Wide 42V input voltage tolerance suitable for industrial bus architectures
- Low non-switching quiescent current for extended battery life
- High junction temperature rating for robust thermal performance
Applications
- Industrial automation controllers
- Point-of-load regulation for digital signal processors
- Telecommunications infrastructure power systems
- Automotive electronics requiring high reliability
Procurement Notes
Verify the specific suffix 'H' indicates the extended temperature grade (+150°C max) compared to standard variants. Confirm the DDIM package designation matches the required footprint. Check current availability status as supply may be limited or subject to factory order constraints. Ensure RoHS compliance documentation aligns with project requirements.
Selection Notes
Select this variant when operation above 125°C is required, as standard versions typically limit to 125°C. The 2A output current suits moderate power applications where size is critical. Consider the 200kHz to 2.2MHz frequency range for optimizing external inductor size versus transient response speed. Verify input voltage stability does not exceed 42V under all operating conditions.
Part Context
This component belongs to the LT8609 family of high-speed synchronous buck regulators. It shares architectural similarities with other members like the LT8609AEDDM but differs in thermal grading and package type. The series is characterized by integrated MOSFETs and control circuitry for compact design.
Replacement Considerations
LT8609AHMSE16#TRPBF offers similar electrical specifications but utilizes an MSOP-16 package instead of DFN. LT8609AEDDM#TRPBF provides 3A output current in a comparable DFN form factor but lacks the extended temperature rating.
