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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 CS51411EDR8 is a low voltage buck regulator from onsemi, designed for step-down DC-DC conversion. It delivers an output current of 1.5 A with an adjustable output voltage range from 1.27 V to 38 V. The device supports switching frequencies of 260 kHz and 520 kHz, allowing flexibility in external component selection. It operates within an input voltage range of 4.5 V to 40 V and features an 8-SOIC surface-mount package. The integrated circuit includes internal biasing capabilities and is rated for junction temperatures up to 150°C.
Feature Summary
- Provides synchronous or non-synchronous buck regulation with high efficiency at low voltages
- Supports external synchronization to align switching frequency with system clocks
- Integrates internal bias supply to minimize external component count
- Features thermal shutdown and current limit protection for robust operation
Applications
- Point-of-load regulation in industrial equipment
- Power supplies for embedded systems and IoT devices
- Bias voltage generation for logic circuits and sensors
- Battery-powered applications requiring efficient step-down conversion
Procurement Notes
Verify the specific suffix 'EDR8' against official datasheets to confirm package type and tape/reel specifications. Confirm RoHS compliance status as legacy variants may differ. Check for obsolescence notices since this model belongs to an older product family. Ensure the supplier provides valid traceability documentation for quality assurance purposes.
Selection Notes
Select this component when a 1.5 A buck converter with adjustable output is required. Choose between 260 kHz or 520 kHz based on inductor size constraints. Verify that the input voltage remains within the 4.5 V to 40 V range. Consider the SOIC-8 package for PCB space limitations. Evaluate thermal performance if operating near maximum temperature ratings.
Part Context
This part belongs to the CS5141x series of low voltage buck regulators. It shares functional similarities with models like CS51412, CS51413, and CS51414, which offer varying switching frequencies and feature sets. The series is designed for general-purpose power management in compact electronic designs.
Replacement Considerations
Publicly confirmed substitutes include CS51412GDR8, CS51413GDR8G, and CS51414GDR8G. These alternatives share similar pinouts and electrical characteristics but may differ in switching frequency or synchronization capabilities. Verify compatibility before replacement.
