R1224N152E-TR-FE

Overview

The R1224N152E-TR-FE is a step-down DC/DC controller from Nisshinbo Micro Devices, designed for Buck topology applications. It operates within an input voltage range of 2.3 V to 18.5 V and delivers a fixed output voltage of 1.5 V. The device supports switching frequencies of 300 kHz and functions in PWM or VFM modes. It features a low operating supply current of 20 µA and maintains operation across a temperature range of -40°C to +85°C. Packaged in SOT-23-5, it is suitable for space-constrained power management designs.

Feature Summary

• Supports both Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) operations for optimized efficiency across varying load conditions.
• Integrates a high-voltage input stage capable of handling up to 18.5 V without requiring external level shifting.
• Achieves ultra-low quiescent current consumption to extend battery life in portable electronic devices.

Applications

• Battery-powered portable electronics
• Consumer handheld devices
• Industrial control systems

Procurement Notes

Verify the specific suffix 'E' corresponds to the required 1.5 V fixed output voltage during procurement. Confirm that the SOT-23-5 package dimensions align with the target PCB footprint. Ensure the selected supplier provides RoHS compliance documentation consistent with the manufacturer's specifications. Cross-reference the datasheet revision date to guarantee accurate electrical parameter validation before integration.

Selection Notes

Select this component when a fixed 1.5 V output is required from a wide input voltage range up to 18.5 V. Consider the 300 kHz switching frequency for balancing component size and efficiency. Evaluate the 20 µA standby current against system power budget requirements. Compare against other R1224N variants if different output voltages are needed while maintaining the same form factor.

Part Context

This part belongs to the R1224N series of switching controllers, which are engineered for compact power management solutions. The series utilizes advanced CMOS technology to minimize power loss. The R1224N152E-TR-FE specifically addresses applications needing stable 1.5 V rails from higher voltage sources in small packages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative Buck controllers by matching input voltage ranges, output voltage settings, and package types such as SOT-23-5.