CS9201YDFR8

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The CS9201YDFR8 is a micropower 5.0 V, 100 mA low dropout linear regulator featuring ON Semiconductor's proprietary NOCAP technology, which ensures output stability without requiring an external capacitor. It provides a precise 5.0 V output accurate within ±2% and maintains a maximum dropout voltage of only 600 mV at full load. The device incorporates comprehensive fault protection mechanisms, including resistance to 74 V peak transients, –15 V reverse voltage, short circuits, thermal shutdown, and overvoltage shutdown.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Proprietary NOCAP technology eliminates the need for external output capacitors while maintaining stability under steady or slow-switching loads
• Robust automotive-grade protection against 74 V peak transient voltages and –15 V reverse battery conditions
• Integrated fault protection includes thermal shutdown, overvoltage shutdown, and short-circuit current limiting
• Micropower operation with typical quiescent current of 450 μA at light loads

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive environments requiring high transient voltage immunity
• Steady-state power supply applications where component count reduction is prioritized
• Slow switching load systems compatible with internal compensation
• Micropower regulated voltage rails in space-constrained designs

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the application load profile remains steady or switches slowly, as rapid transient events may require an external storage capacitor not exceeding 100 nF or a traditional LDO design. Confirm input voltage ranges stay within the specified 6.0 V to 26 V operational limits to ensure proper regulation and protection functionality. Ensure thermal management meets junction temperature requirements for the specific PCB layout.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator when minimizing bill-of-materials by removing external output capacitors is critical. It is suitable for applications demanding high reliability against automotive electrical transients and reverse polarity. Consider alternative models like the CS8221 if the load exhibits frequent or severe current transients that exceed the capabilities of the internal NOCAP compensation scheme.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the CS9201 series of micropower linear regulators manufactured by onsemi. It utilizes the SO-8 package (Case 7511) and is part of a family designed for cost-sensitive, space-constrained applications. The YDFR8 suffix indicates the device is supplied in a 2500-unit tape and reel format for automated surface-mount assembly processes.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Public confirmed substitute part numbers: CS9201YDF8 (same function, rail packaging). For applications requiring traditional output stage compensation due to heavy transient loads, consider the CS8221.