R1223N332A-TR-FE

Overview

The R1223N332A-TR-FE is a step-down DC/DC controller manufactured by Nisshinbo Micro Devices. It operates with an input voltage range of 2.3V to 13.2V and utilizes PWM/VFM switching modes for efficient power management. The device features a fixed switching frequency of 300kHz, ensuring stable operation across various load conditions. Packaged in a compact SOT-23-5 format, this component is designed for space-constrained applications requiring reliable voltage regulation.

Feature Summary

• Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) for optimized efficiency under different load conditions.
• Integrates a wide input voltage range capability suitable for diverse power supply sources.
• Utilizes a fixed 300kHz switching frequency to minimize external component size requirements.

Applications

• Battery-powered portable electronic devices
• General-purpose step-down power conversion circuits
• Embedded systems requiring regulated low-voltage supplies

Procurement Notes

Verify the specific suffix 'TR-FE' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the SOT-23-5 package dimensions align with the target PCB footprint constraints. Ensure compatibility with the intended input voltage levels before finalizing procurement orders.

Selection Notes

Select this controller when a compact solution for step-down conversion is required within the 2.3V to 13.2V input range. Consider the fixed 300kHz frequency for balancing ripple performance and component size. Evaluate the need for VFM operation at light loads to maximize battery life in portable applications compared to continuous PWM modes.

Part Context

This component belongs to the R1223N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing efficient DC/DC conversion solutions in small form factors. The R1223N332A variant specifically addresses applications needing a 300kHz fixed frequency operation with integrated control logic.

Replacement Considerations

Direct substitutes may include other Nisshinbo R1223N series variants with different output voltage settings or packaging options. Cross-reference pinout configurations and electrical specifications carefully when considering alternative manufacturers' buck controllers.