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R1224N122H-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 R1224N122H-TR-FE is a non-isolated Buck DC/DC controller from Nisshinbo Micro Devices. It operates with an input voltage range of 2.3 V to 18.5 V and provides a fixed output voltage of 1.2 V. The device supports PWM and VFM switching modes at a frequency of 180 kHz, achieving up to 100% duty cycle. Quiescent current is 20 uA. It functions within a temperature range of -40°C to +85°C and is housed in an SOT-23-5 package.
Feature Summary
- Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) for optimized efficiency across load conditions.
- Features low quiescent current consumption to enhance battery life in portable applications.
- Capable of 100% duty cycle operation for minimal dropout voltage between input and output.
Applications
- Battery-powered portable electronic devices
- Consumer electronics requiring efficient step-down conversion
- Industrial control systems with variable input voltages
Procurement Notes
Verify the specific suffix 'H' against the manufacturer's official datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with external MOSFETs and passive components for the 180 kHz switching frequency. Confirm RoHS compliance status through the latest product documentation before finalizing procurement.
Selection Notes
Select this component when a fixed 1.2 V output is required from a wide input range up to 18.5 V. Consider the SOT-23-5 package size constraints and thermal performance. Evaluate the need for PWM/VFM mode switching based on light-load efficiency requirements versus noise sensitivity in the target application circuit.
Part Context
This part belongs to the R1224N series of switching controllers designed for step-down applications. It is categorized under PMIC - Power Management ICs. The series focuses on providing efficient power conversion solutions with compact packaging suitable for space-constrained designs.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official cross-reference list or datasheet for verified alternatives.
