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R1225N122D-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：500kHz
- 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 R1225N122D-TR-FE is a step-down DC-DC controller IC manufactured by Nisshinbo Micro Devices Inc. It operates with an input voltage range of 2.3V to 18.5V and utilizes PWM/VFM control modes for efficient power management. The device is housed in a SOT-23-6W package, suitable for surface-mount applications. As part of the R1225N series, it functions as a positive output buck regulator designed for compact power supply systems requiring reliable voltage regulation.
Feature Summary
- Supports wide input voltage range from 2.3V to 18.5V
- Integrates PWM and VFM switching control modes
- Designed as a positive output step-down DC-DC controller
Applications
- General purpose power supply systems
- Battery-powered electronic devices
- Compact consumer electronics
Procurement Notes
Verify the manufacturer part number R1225N122D-TR-FE against official Nisshinbo documentation to confirm compatibility. Ensure the SOT-23-6W package matches your PCB footprint requirements. Check RoHS compliance status if environmental regulations apply to your specific deployment. Confirm that the 18.5V maximum input rating aligns with your system's power source specifications before integration.
Selection Notes
Select this component when a wide input voltage range up to 18.5V is required for step-down applications. The combination of PWM and VFM modes offers flexibility for varying load conditions. Consider the SOT-23-6W package size for space-constrained designs. Ensure the application does not exceed the specified input voltage limits to maintain proper controller functionality and reliability.
Part Context
This component belongs to the R1225N series of switching controllers from Nisshinbo Micro Devices. The series focuses on PMIC solutions for power management integrated circuits. The R1225N122D-TR-FE specifically addresses needs for efficient buck conversion in portable and industrial electronics, providing a stable regulated output from a broader input spectrum within the designated package constraints.
Replacement Considerations
Consult official substitution lists for compatible step-down controllers within the same series. Verify pinout compatibility and electrical parameters such as input voltage range and control mode before replacing. Generic replacements may not support the specific PWM/VFM hybrid operation or the exact package dimensions required for the original design.
