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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.5A 18DFN
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk
- 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：18-VFDFN Exposed Pad
- Supplier Device Package：18-DFN (5x6)
- Grade：-
- Qualification：-
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Overview
The CS51411EMNR2G is a synchronous buck switching regulator IC manufactured by onsemi. It operates with an input voltage range of 4.5V to 40V and provides an adjustable output voltage from 1.27V to 38V. The device delivers a continuous output current of 1.5A at a fixed switching frequency of 260kHz. It is housed in a 18-DFN (5x6) package with an exposed pad for thermal management. The component supports a junction temperature range of -40°C to +150°C.
Feature Summary
- Integrated synchronous rectification for improved efficiency
- Fixed 260kHz switching frequency reduces external component size
- Wide input voltage range accommodates various supply sources
- Exposed pad design facilitates effective heat dissipation
Applications
- Point-of-load regulation in industrial equipment
- Power supplies for automotive infotainment systems
- Voltage conversion for embedded computing modules
- Battery-powered device power management
Procurement Notes
Verify the specific suffix EMNR2G against official datasheets to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status as indicated in manufacturer documentation. Check for obsolescence notices or product change notifications prior to finalizing procurement plans.
Selection Notes
Select this component when a compact, high-efficiency buck converter is required for inputs up to 40V. Ensure the application demands a fixed 260kHz frequency and 1.5A current capability. Verify that the 18-DFN footprint fits the PCB layout constraints and thermal requirements are met via the exposed pad.
Part Context
This part belongs to the CS51411 series of low-voltage synchronous buck regulators. It is designed for applications requiring efficient DC-DC conversion in space-constrained environments. The series typically offers integrated power switches to minimize external component count.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official distributor databases for cross-reference information.
