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R1224N502H-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 R1224N502H-TR-FE is a non-isolated Buck DC/DC controller from the Nisshinbo R1224N series. It operates with an input voltage range of 2.3 V to 18.5 V and delivers a fixed output voltage of 5 V. The device supports a maximum output current of 50 mA and features a switching frequency of 500 kHz. It achieves a duty cycle of up to 100% and consumes a typical operating supply current of 40 uA. The component is housed in an SOT-23-5 package, suitable for surface mount installation, and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Supports PWM and VFM modes for efficient power conversion
- Enables high efficiency through 100% duty cycle operation
- Designed for compact applications with low quiescent current consumption
Applications
- Portable electronic devices requiring step-down voltage regulation
- Battery-powered systems needing low standby current
- Embedded circuits utilizing non-isolated DC/DC conversion
Procurement Notes
Verify the specific suffix H against the manufacturer's datasheet to confirm the fixed 5V output configuration. Ensure the ordering quantity aligns with the standard reel packaging requirements specified by Nisshinbo Micro Devices. Cross-reference the SOT-23-5 footprint with your PCB design guidelines before finalizing procurement.
Selection Notes
Select this component when a fixed 5V output is required from a wide input voltage range up to 18.5 V. The 500 kHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the 50 mA output limit and 40 uA supply current when designing for space-constrained or battery-sensitive applications.
Part Context
This part belongs to the R1224N series of switching controllers, which are designed for general-purpose power management. The series offers various output voltage options and switching frequencies to suit different application needs. The R1224N502H-TR-FE specifically provides a fixed 5V output, distinguishing it from adjustable variants within the same family.
Replacement Considerations
Consult official substitution lists for compatible parts within the R1224N series. Verify that alternative models match the required 5V output, 500 kHz frequency, and SOT-23-5 package dimensions. Ensure any substitute maintains the same electrical characteristics and thermal performance.
