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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.5A 8SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.5V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.27V
- Voltage - Output (Max)：38V
- Current - Output：1.5A
- Frequency - Switching：260kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The CS51411GDR8 is a synchronous buck regulator from onsemi, operating within an input voltage range of 2.7V to 36V. It delivers up to 1.5A output current with a fixed switching frequency of 520kHz. The device features adjustable output voltage from 0.8V to 36V and operates across a junction temperature range of -40°C to 150°C. Packaged in an 8-lead SOIC (Narrow) with a 3.90mm width, it integrates internal high-side and low-side MOSFETs for efficient power conversion.
Feature Summary
- Integrates synchronous rectification with internal high-side and low-side MOSFETs
- Supports external synchronization to align switching frequency with system clocks
- Includes programmable soft-start to limit inrush current during startup
- Provides comprehensive protection against overcurrent, thermal overload, and undervoltage lockout
Applications
- Point-of-load regulation for industrial control systems
- Power supply stages for embedded computing platforms
- Voltage regulation for communication equipment infrastructure
Procurement Notes
Verify the specific suffix 'R8' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the component meets RoHS compliance standards applicable to your manufacturing region. Ensure the ordering quantity aligns with standard reel sizes to avoid partial reel handling issues.
Selection Notes
Select this component when a compact synchronous solution is needed for moderate current loads under 1.5A. It is suitable for designs requiring wide input voltage flexibility and precise output voltage adjustment. Consider the SOIC-8 package constraints regarding thermal dissipation and PCB space availability before finalizing the design.
Part Context
This part belongs to the CS5141x family of low-voltage buck regulators designed for efficiency and ease of implementation. It serves as a direct replacement for legacy asynchronous controllers by integrating power switches internally. The series supports various frequencies to optimize trade-offs between size and efficiency.
Replacement Considerations
The CS51411GD8 is a tube-packaged variant of the same functional device. Verify if the change from tape-and-reel to tube packaging impacts your production line automation requirements.
