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R1224N252H-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：Transistor Driver
- 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
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The R1224N252H-TR-FE is a buck DC/DC controller IC manufactured by Nisshinbo Micro Devices. It supports an input voltage range of 2.3 V to 18.5 V and features a fixed switching frequency of 500 kHz. The device operates in PWM/VFM mode with a maximum duty cycle of 100%. It provides a nominal output voltage of 2.5 V and delivers an output current of 50 mA. The component is housed in a compact SOT-23-5 package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Supports Pulse Width Modulation and Variable Frequency Mode control techniques for efficient power management.
- Features a 100% maximum duty cycle capability suitable for low dropout applications.
- Utilizes a compact SOT-23-5 surface-mount package designed for space-saving implementations.
Applications
- Portable battery-powered electronic devices
- Embedded systems requiring step-down voltage regulation
- Industrial control modules operating within specified thermal limits
Procurement Notes
Verify the manufacturer designation, as historical records may reference Ricoh Electronic Devices Co., Ltd. due to corporate acquisitions. Confirm the specific suffix H indicates the correct package variant and pinout configuration. Ensure compliance with RoHS standards if required by your assembly process. Cross-reference the datasheet version date to confirm technical specifications have not been updated.
Selection Notes
Select this component when a fixed 2.5 V output is required without external feedback resistors. It is appropriate for designs needing a 500 kHz switching frequency to balance size and efficiency. Consider the 50 mA output current limit against load requirements. The wide input voltage range accommodates single-cell lithium-ion batteries or varying supply rails.
Part Context
This part belongs to the R1224N series of synchronous step-down DC/DC controllers from Nisshinbo Micro Devices. The series typically drives external high-side and low-side NMOS transistors to generate regulated output voltages. The R1224N252H-TR-FE represents a specific configuration within this family, distinguished by its fixed output voltage and control architecture.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and control loop stability before considering alternative components from other manufacturers.
