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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：520kHz
- 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 CS51414GMNR2G is a synchronous step-down DC-DC converter manufactured by onsemi. It operates with an input voltage range of 4.5V to 40V and provides a single adjustable output from 1.27V to 38V at up to 1.5A. The device integrates high-side and low-side power MOSFETs for efficient power conversion. It utilizes a fixed 260kHz switching frequency and supports surface-mount installation in a compact 18-VFDFN package with an exposed pad. The component is rated for operation across an extended junction temperature range of -40°C to +150°C.
Feature Summary
- Integrates high-side and low-side power MOSFETs for synchronous rectification
- Supports wide input voltage range suitable for various bus architectures
- Features adjustable output voltage capability within specified limits
- Designed for high thermal performance in compact surface-mount packages
Applications
- Industrial point-of-load regulation
- Automotive electronics systems
- Communication infrastructure power supplies
- General-purpose DC-DC conversion modules
Procurement Notes
Verify the specific suffix 'GMNR2G' against official datasheets to confirm pinout and packaging details. Confirm current availability status as distribution channels may list obsolete or end-of-life inventory. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.
Selection Notes
Select this component when a robust, integrated synchronous buck solution is required for inputs up to 40V. Consider the 1.5A output current limit and 260kHz frequency for balancing efficiency and passive component size. Verify that the 18-VFDFN package fits the mechanical constraints and that the thermal design supports the 150°C junction temperature rating.
Part Context
This part belongs to the CS5141x family of synchronous buck regulators from onsemi. These devices are designed for applications requiring reliable power conversion in automotive and industrial environments. The family typically shares similar control architectures and integration levels, differing primarily in output current capabilities and package options.
Replacement Considerations
Check for direct pin-compatible replacements within the CS5141x series. Verify if alternative manufacturers offer equivalent 40V synchronous buck converters with comparable current ratings and package dimensions. Ensure functional equivalence regarding control loop stability and thermal performance.
