S-13R1A31-A4T2U3

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

The S-13R1A31-A4T2U3 is a CMOS positive voltage regulator from the S-13R1 Series, manufactured by ABLIC Inc. It provides a fixed output voltage of 3.1 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 characteristics include a typical dropout voltage of 150 mV at 100 mA, a ripple rejection ratio of 70 dB, and low current consumption of 5 μA during operation. It features built-in reverse current protection, overcurrent protection, and thermal shutdown circuits.

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

• Built-in reverse current protection function prevents current flow from the VOUT pin to the VIN pin without requiring an external IC protection diode.
• Integrated ON/OFF circuit allows for power control to ensure long battery life in portable applications.
• Includes overcurrent protection and thermal shutdown circuits to prevent damage from excessive load currents or overheating.

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

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

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

Verify the specific package type HSNT-4 (1010) and the 'A' series designation which includes discharge shunt and pull-down functions. Confirm environmental compliance codes such as lead-free and halogen-free status. Ensure input and output capacitor requirements are met for stability. Check operational temperature range specifications against application needs.

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

Select this component for applications requiring low quiescent current and high ripple rejection. The 'A' type variant offers both discharge shunt and constant current source pull-down capabilities. Consider the HSNT-4 package for compact surface-mount designs. Evaluate power dissipation limits based on the specific ambient temperature and board layout conditions.

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

This part belongs to the S-13R1 Series of 5.5 V input, 150 mA voltage regulators with reverse current protection. The series utilizes CMOS technology to achieve low dropout voltage and high accuracy. The 'A' suffix indicates specific internal logic configurations including active high ON/OFF control and available discharge functions.

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

Other parts within the S-13R1 Series may serve as substitutes if they match the required output voltage and package type. Verify compatibility of the ON/OFF logic and discharge functions when selecting alternative variants from the same manufacturer family.