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R1225N182D-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 R1225N182D-TR-FE is a positive output step-down DC-DC controller IC manufactured by Nisshinbo Micro Devices Inc. It operates with an input voltage range of 2.3 V to 18.5 V and supports a switching frequency of 500 kHz. The device utilizes PWM/VFM control modes for efficient power management. It is housed in a SOT-23W-6 package and is designed for operation within a temperature range of -40°C to +85°C.
Feature Summary
- Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) for optimized efficiency across varying load conditions.
Applications
- Buck regulator circuits
- Positive output step-down DC-DC conversion
Procurement Notes
Verify the specific suffix 'TR-FE' against the manufacturer's official datasheet to confirm tape and reel packaging specifications. Ensure the ordering quantity aligns with the standard factory pack size, typically 3000 units per reel, as indicated by distributor listings for this series. Cross-reference the RoHS compliance status directly with the product documentation prior to procurement.
Selection Notes
Select this component when designing systems requiring a wide input voltage range up to 18.5 V with a fixed 500 kHz switching frequency. The SOT-23W-6 package is suitable for space-constrained applications. Verify that the external component selection matches the internal control loop requirements for stable PWM/VFM transition.
Part Context
This part belongs to the R1225N series of switching controllers from Nisshinbo Micro Devices. The series includes various variants differentiated by output voltage settings and control modes. The R1225N182D-TR-FE specifically denotes a buck controller configuration within this family, sharing common interface characteristics with other members like the R1225N332C and R1225N502K.
Replacement Considerations
Direct substitutes include R1225N332C-TR-FE and R1225N502K-TR-FE from the same manufacturer series. These parts share identical package types and general control architectures but differ in internal reference or feedback settings. Verify electrical compatibility before substitution.
