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NX2114ACSTR
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Product Detailed Parameters
- Description：IC PWM CONTROLLER
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Output Type：PWM
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 5.5V
- Frequency - Switching：600kHz
- Duty Cycle (Max)：94%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Soft Start
- Operating Temperature：0°C ~ 70°C
- 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 NX2114ACSTR is a synchronous PWM DC-DC switching controller manufactured by Microsemi Corporation. It utilizes a buck topology to provide a single positive output with a maximum duty cycle of 94%. The device operates at a fixed switching frequency of 600kHz and requires a supply voltage (Vcc/Vdd) ranging from 4.5V to 5.5V. Key control features include enable functionality and soft-start capabilities. The component is housed in an 8-SOIC package with a width of 3.90mm, designed for surface-mount installation.
Feature Summary
- Synchronous rectification architecture for improved efficiency
- Integrated soft-start mechanism to limit inrush current
- Enable pin for power management control
Applications
- Step-down voltage regulation in portable electronics
- Power distribution units requiring compact form factors
- Embedded systems with strict thermal constraints
Procurement Notes
Verify the obsolete status of this specific part number before initiating any procurement process. Confirm that alternative components are available if long-term supply stability is required. Ensure that the 8-SOIC package dimensions match the target PCB footprint. Validate that the 600kHz switching frequency aligns with the electromagnetic interference requirements of the final assembly.
Selection Notes
Select this controller when a fixed 600kHz frequency is necessary to minimize passive component size. The synchronous design is suitable for applications prioritizing efficiency over cost. Ensure the input voltage range fits within the 4.5V to 5.5V specification. Consider the thermal performance of the SOIC package under full load conditions.
Part Context
This component belongs to the NX2114 series, which includes variants operating at different frequencies such as the NX2114CSTR running at 300kHz. The 'A' suffix typically denotes the 600kHz variant within this family. All models share the same basic buck topology and control features but differ in switching speed specifications.
Replacement Considerations
The NX2114CSTR serves as a direct functional substitute within the same series, differing only in its 300kHz switching frequency compared to the 600kHz operation of the NX2114ACSTR. Both parts utilize the same 8-SOIC package and support synchronous buck conversion.
