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R1225N502C-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 R1225N502C-TR-FE is a step-down DC/DC controller from Nisshinbo Micro Devices, designed for voltage mode operation with PWM or VFM switching control. It supports an input voltage range of 2.3 V to 18.5 V and operates at a fixed frequency of 300 kHz. The device provides a single output channel and functions within a temperature range of -40°C to +85°C. Packaged in a SOT-23W-6 surface-mount case, it serves as a core component for efficient power management in compact electronic systems requiring regulated buck conversion.
Feature Summary
- Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) switching control strategies
- Capable of handling high input voltages up to 18.5 V for versatile power supply applications
- Operates at a fixed switching frequency of 300 kHz for stable performance
Applications
- Step-down DC/DC converter circuits
- Voltage regulation modules
- Power management units in portable electronics
Procurement Notes
Verify the specific suffix 'C' against the manufacturer's latest datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the SOT-23W-6 package dimensions align with your PCB footprint. Confirm RoHS compliance status if required by your manufacturing standards before finalizing procurement orders.
Selection Notes
Select this component when a buck controller supporting up to 18.5 V input is required. The 300 kHz frequency offers a balance between efficiency and component size. Consider the SOT-23W-6 package for space-constrained designs. Verify that external components such as inductors and capacitors are rated for the expected current and voltage levels associated with this controller.
Part Context
This part belongs to the R1225N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing flexible control modes for DC/DC conversion. The R1225N502C variant specifically addresses applications needing wide input voltage ranges and reliable voltage mode control in a compact form factor.
Replacement Considerations
Check the R1225N502K-TR-FE for potential compatibility, though suffix differences may indicate variations in packaging or specific sub-characteristics. Always consult official substitution lists from Nisshinbo Micro Devices to ensure functional equivalence.
