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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A 8SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：8V
- Voltage - Input (Max)：50V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：24V
- Current - Output：2A
- Frequency - Switching：-
- Synchronous Rectifier：No
- Operating Temperature：-20°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOIC-EP
- Grade：-
- Qualification：-
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Overview
The A4447SLJTR-T is a fixed off-time, current-mode-controlled buck switching regulator manufactured by Allegro MicroSystems. It operates within an input voltage range of 8 V to 50 V and provides a single adjustable output from 800 mV to 24 V with a maximum output current of 2 A. The device features a static current of 4.4 mA and functions in temperatures between -20 °C and +85 °C. It is housed in an SOIC-8 surface-mount package.
Feature Summary
- Implements fixed off-time current-mode control architecture for stable regulation
- Supports wide input voltage range suitable for various power sources
- Provides adjustable output voltage capability for flexible design integration
Applications
- General purpose DC-DC conversion systems
- Power management integrated circuits requiring step-down topology
- Electronic devices operating within specified temperature ranges
Procurement Notes
Verify the specific suffix 'SLJTR-T' against official Allegro MicroSystems documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with moisture sensitivity levels and handling requirements during assembly processes. Cross-reference ordering information with authorized distributors to validate part authenticity and current production status.
Selection Notes
Select this component when a robust buck converter with wide input voltage tolerance is required. The current-mode control offers predictable performance across varying load conditions. Consider the SOIC-8 package constraints for thermal management and PCB layout space. Verify that the 2 A output current meets the target application's peak demand without exceeding thermal limits.
Part Context
This part belongs to the A4447 series of switching regulators from Allegro MicroSystems. It serves as a general-purpose power management solution designed for efficiency and reliability. The series focuses on providing versatile voltage regulation capabilities for industrial and commercial electronic applications requiring compact form factors.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult Allegro MicroSystems engineering resources or authorized distributor databases for verified cross-reference options based on electrical and mechanical compatibility.
