R1225N502J-TR-FE

$0.63

Description：18.5V INPUT PWM/VFM STEP-DOWN DC
Series：-
Mfr：Nisshinbo Micro Devices Inc.
Package：Tape & Reel (TR)

SKU:060067711c37 Category: DC DC Switching Controllers Brand: Nisshinbo Micro Devices Inc.

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Product introduction

Product Detailed Parameters

Description：18.5V INPUT PWM/VFM STEP-DOWN DC
Series：-
Mfr：Nisshinbo Micro Devices Inc.
Package：Tape & Reel (TR)
Output Type：PWM
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 (TA)
Mounting Type：Surface Mount
Package / Case：SOT-23-6
Supplier Device Package：SOT-23-6W
Grade：-
Qualification：-

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R1225N502J-TR-FE

Overview

The R1225N502J-TR-FE is a step-down DC/DC controller manufactured by Nisshinbo Micro Devices Inc. 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 or VFM control modes for efficient power conversion. It is designed for operation across a temperature range of -40°C to 85°C and is housed in a compact SOT-23W-6 package.

Feature Summary

Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) for optimized efficiency under varying load conditions.
Capable of driving external high-side and low-side NMOS transistors to implement synchronous buck converter topologies.
Features a wide input voltage tolerance suitable for diverse power supply architectures.

Applications

Battery-powered portable electronic devices requiring efficient voltage regulation.
General-purpose embedded systems utilizing external MOSFET configurations.
Industrial control modules operating within specified thermal limits.

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to ensure correct packaging and variant selection. Confirm that the component meets all required environmental and quality standards for the intended application before finalizing procurement orders.

Selection Notes

Select this controller when designing a synchronous buck converter requiring a wide input voltage range up to 18.5 V. Ensure the design accommodates external NMOS drivers and adheres to the 180 kHz switching frequency constraints. Verify thermal management requirements for the SOT-23W-6 package.

Part Context

This component belongs to the R1225N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing flexible control options for step-down applications, allowing designers to balance efficiency and complexity through selectable modulation modes.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains compatibility with the 18.5 V input limit and 180 kHz frequency specifications.