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R1224N122M-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：180kHz
- 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 R1224N122M-TR-FE is a step-down DC-DC controller IC from Nisshinbo Micro Devices. It operates with an input voltage range of 2.3V to 18.5V and utilizes PWM/VFM control modes for efficient power conversion. The device features a fixed output configuration and supports up to 100% duty cycle operation. Packaged in a compact SOT-23-5 format, it is designed for non-isolated buck applications within a temperature range of -40°C to +85°C.
Feature Summary
- Supports PWM and VFM switching modes for optimized efficiency across varying load conditions
- Enables continuous conduction with maximum 100% duty cycle capability
- Operates reliably within a wide input voltage range from 2.3V to 18.5V
Applications
- Portable electronic devices requiring stable step-down power rails
- Battery-powered systems utilizing buck converter topologies
- General-purpose non-isolated DC-DC conversion circuits
Procurement Notes
Verify the specific suffix 'M' corresponds to the required fixed output voltage setting before procurement. Confirm that the SOT-23-5 package aligns with the target PCB footprint and thermal requirements. Ensure compatibility with the intended operating temperature range of -40°C to +85°C for the final application environment.
Selection Notes
Select this component when a fixed-output buck controller is needed with a high maximum input voltage of 18.5V. The dual-mode PWM/VFM operation makes it suitable for applications demanding efficiency at both light and heavy loads. Consider the SOT-23-5 package size constraints and the requirement for external switching components in the design phase.
Part Context
This part belongs to the R1224N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing efficient power management solutions for portable electronics. The R1224N122M-TR-FE specifically denotes a variant with a fixed output voltage determined by the internal resistor network associated with the 'M' suffix.
Replacement Considerations
The R1224N182E-TR-FE is a documented substitute within the same family, offering similar buck controller functionality but with a different fixed output voltage specification.
