S-13R1C22-A4T2U3

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

The S-13R1C22-A4T2U3 is a CMOS LDO voltage regulator from the S-13R1 Series by ABLIC Inc. It provides a fixed output voltage of 2.2 V with an accuracy of ±1.0%. The device supports an input voltage range of 2.0 V to 5.5 V and delivers up to 150 mA of output current. Key electrical parameters include a typical dropout voltage of 0.28 V at 100 mA, a ripple rejection ratio of 70 dB, and a quiescent current of 5 μA during operation. It features reverse current protection limiting leakage to 0.09 μA max.

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

• Built-in reverse current protection function prevents current flow from the output pin to the input pin without requiring external diodes.
• Integrated overcurrent protection circuit limits load current to protect the output transistor from excessive stress.
• Thermal shutdown circuit automatically stops regulation when junction temperature exceeds safe operating limits to prevent damage.
• ON/OFF control pin allows for active high logic switching to manage power consumption and extend battery life.

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

• Constant-voltage power supply for battery-powered devices
• Power management for portable equipment
• Voltage regulation for mobile phones
• Power supply for home electric appliances

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

Verify the specific package type HSNT-4 (1010) and the C-type functional configuration (discharge shunt unavailable, pull-down available) against your schematic requirements. Confirm that the fixed 2.2 V output matches your system's rail needs. Ensure input and output capacitors meet the minimum 1.0 μF ceramic specification for stability.

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

Select this component if a fixed 2.2 V output is required within the S-13R1 family. The C-type designation indicates specific ON/OFF pin behaviors: it lacks a discharge shunt but includes a constant current source pull-down. Compare these internal circuit characteristics against A, B, or D types to ensure compatibility with your power-down state requirements.

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

This part belongs to the S-13R1 Series, which utilizes CMOS technology for low current consumption and high ripple rejection. The series is designed for positive voltage regulation with a maximum input of 5.5 V. The 'C' in the model number identifies the specific internal logic and protection feature set distinct from other variants in the same product line.

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

Direct substitutes within the S-13R1 series include S-13R1A22-A4T2U3, S-13R1B22-A4T2U3, and S-13R1D22-A4T2U3. These parts share the same 2.2 V output and package but differ in ON/OFF pin internal circuits such as discharge shunt and pull-down availability. Verify functional equivalence before substitution.

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

Does the S-13R1C22-A4T2U3 have a discharge shunt function?

No, the C-type variant does not include a built-in discharge shunt circuit. Only A and B types feature this function.

What is the maximum reverse current allowed?

The reverse current flowing from the VOUT pin to the VIN pin is limited to a maximum of 0.09 μA due to the built-in reverse current protection function.

Can I use tantalum capacitors for this regulator?

Yes, tantalum, OS, or aluminum electrolytic capacitors can be used provided their capacitance is 1.0 μF or more. However, ceramic capacitors are recommended for stability.