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R1225N252C-TR-FE
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Product Detailed Parameters
- Description：18.5V INPUT PWM/VFM STEP-DOWN DC
- Series：-
- Mfr：Nisshinbo Micro Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：PWM
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：2.3V ~ 18.5V
- Frequency - Switching：300kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6W
- Grade：-
- Qualification：-
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Overview
The R1225N252C-TR-FE is a step-down DC-DC controller from Nisshinbo Micro Devices. It operates with an input voltage range of 2.3V to 18.5V and supports a switching frequency of 300kHz. The device features PWM/VFM control modes and allows for a maximum duty cycle of 100%. It does not include a built-in synchronous rectifier or clock synchronization capabilities. The component is housed in a SOT-23-Wide-6 package and is RoHS compliant.
Feature Summary
- Supports PWM and VFM control modes for efficient power management
- Enables 100% maximum duty cycle operation for low dropout performance
- Operates within a wide input voltage range up to 18.5V
Applications
- Battery-powered portable electronic devices
- General-purpose step-down power supply circuits
- Embedded systems requiring stable DC voltage regulation
Procurement Notes
Verify the specific suffix 'C' against the official datasheet to confirm output voltage settings and pinout compatibility. Ensure the SOT-23-Wide-6 footprint matches the PCB design requirements. Confirm RoHS compliance status with the supplier if environmental regulations apply to the final assembly.
Selection Notes
Select this controller when a non-synchronous buck topology is required for cost-sensitive applications. The 300kHz frequency offers a balance between component size and efficiency. Consider external MOSFET selection based on the controller's drive capabilities and the target load current requirements for optimal thermal performance.
Part Context
This component belongs to the R1225N series of switching controllers designed for step-down applications. The series typically includes variants with different fixed output voltages, indicated by the numerical suffixes. These controllers are intended for use with external power switches to create compact DC-DC conversion solutions.
Replacement Considerations
Check the R1225N252B-TR-FE for potential functional similarities within the same product family. Verify that any substitute part maintains the same input voltage range, switching frequency, and package dimensions to ensure board compatibility.
