R1225N302B-TR-FE

Overview

The R1225N302B-TR-FE is a positive output step-down DC-DC controller IC manufactured by Nisshinbo Micro Devices Inc. It supports an input voltage range up to 18.5V and utilizes a PWM/VFM hybrid control method for efficient power management. The device operates with a fixed switching frequency of 500kHz, ensuring stable performance across various load conditions. Packaged in a compact SOT-23-Wide-6 format, this component is designed for applications requiring reliable voltage regulation and high efficiency in space-constrained electronic systems.

Feature Summary

• Supports PWM/VFM hybrid control for optimized efficiency
• Fixed 500kHz switching frequency operation
• Positive output step-down DC-DC topology

Applications

• Portable electronic devices
• Battery-powered equipment
• General-purpose power supply circuits

Procurement Notes

Verify the specific ordering suffix against the official datasheet to ensure correct package and tape/reel specifications. Confirm that the requested part number matches the exact electrical characteristics required for the design. Cross-reference the manufacturer's latest documentation to validate compliance with current RoHS standards and environmental regulations before finalizing procurement orders.

Selection Notes

Select this controller when a fixed 500kHz switching frequency is required for EMI management. Ensure the external circuit components are rated for voltages exceeding the maximum 18.5V input limit. Verify compatibility with the desired output voltage setting via external resistor dividers. Consider the thermal performance within the SOT-23-Wide-6 package relative to the expected load current and ambient temperature conditions.

Part Context

This component belongs to the R1225N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing efficient power management solutions for portable and battery-operated applications. The R1225N302B variant specifically offers a defined output voltage configuration within this family, maintaining consistent interface and control logic characteristics shared across the model line.

Replacement Considerations

Consult the official replacement guide for direct substitutes. Verify pinout compatibility and electrical parameter alignment with alternative models from the same manufacturer or other suppliers before integration.