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R1224N252F-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 R1224N252F-TR-FE is a step-down DC/DC controller from Nisshinbo Micro Devices, designed for efficient power management in compact systems. It supports an input voltage range of 2.3 V to 18.5 V and operates with a fixed switching frequency of 180 kHz. The device utilizes PWM/VFM control modes to optimize efficiency across varying load conditions. Packaged in a SOT-23-5 surface-mount outline, it functions within an industrial temperature range of -40°C to +85°C. Key electrical parameters include a maximum duty cycle of 100% and integrated enable control features, making it suitable for battery-powered applications requiring stable output regulation.
Feature Summary
- Supports wide input voltage range up to 18.5 V
- Integrates PWM and VFM control modes for high efficiency
- Features 100% duty cycle capability for low dropout operation
- Includes enable pin for power management control
Applications
- Battery-powered portable electronic devices
- Industrial control systems requiring stable DC voltage
- Embedded systems with limited space constraints
Procurement Notes
Verify the complete part number including suffixes such as TR-FE to ensure correct packaging and specifications. Confirm RoHS compliance status through official documentation before procurement. Check lead times and minimum order quantities directly with authorized distributors. Ensure storage and handling procedures align with manufacturer guidelines for surface-mount components.
Selection Notes
Select this component when a buck converter controller is needed with a 180 kHz switching frequency. Consider the SOT-23-5 package for space-constrained designs. Evaluate thermal performance requirements against the -40°C to +85°C operating range. Compare efficiency needs between PWM and VFM modes based on expected load profiles.
Part Context
This part belongs to the R1224N series of switching controllers from Nisshinbo Micro Devices. The series offers various input voltage ranges and switching frequencies to suit different application requirements. The R1224N252F variant specifically targets mid-range input voltages with a fixed 180 kHz frequency, balancing size and performance for general-purpose step-down conversion tasks.
Replacement Considerations
Direct substitutes may include R1224N252M-TR-FE or R1224N252E-TR-FE, which share similar input ranges but differ in switching frequency (180 kHz vs 300 kHz). Verify pin compatibility and control mode differences before substitution.
