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R1224N182M-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 R1224N182M-TR-FE is a step-down DC/DC controller manufactured by Nisshinbo Micro Devices. It operates with an input voltage range up to 18.5V and supports PWM/VFM switching modes. The device features a fixed output voltage of 1.8V, determined by the internal resistor divider. It is housed in a compact SOT-23-5 package and utilizes a tape and reel packaging format for automated assembly.
Feature Summary
- Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) operation for optimized efficiency across load conditions.
- Integrates high-side and low-side NMOS driver outputs to control external power transistors.
- Includes built-in protection mechanisms such as overcurrent protection and thermal shutdown.
Applications
- Portable electronic devices requiring efficient step-down power conversion
- Battery-powered systems utilizing buck regulation architectures
- General-purpose embedded power management circuits
Procurement Notes
Verify the specific suffix 'M' against official datasheets to confirm the fixed output voltage setting. Ensure compatibility with external NMOS gate drive requirements. Confirm RoHS compliance status through current manufacturer documentation prior to integration.
Selection Notes
Select this component when a fixed 1.8V output is required from an input rail up to 18.5V. Consider the SOT-23-5 package size constraints and the necessity for external pass elements. Evaluate thermal performance based on expected load currents and PCB layout capabilities.
Part Context
This part belongs to the R1224N series of synchronous step-down DC/DC controllers. The series is designed for applications requiring high efficiency and compact footprints. Variants within the series differ primarily by their fixed output voltage settings and specific package configurations.
Replacement Considerations
Cross-reference with other R1224N variants for different output voltages. Verify pinout compatibility if substituting with similar buck controllers from other manufacturers. Ensure external component values are adjusted for any differences in switching frequency or drive strength.
