S-13R1C34-A4T2U3

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

The S-13R1C34-A4T2U3 is a CMOS linear voltage regulator from the S-13R1 series, manufactured by ABLIC Inc. It provides a fixed output voltage of 3.4 V with an accuracy of ±1.0%. The device supports a maximum output current of 150 mA and operates within an input voltage range of 2.0 V to 5.5 V. Key electrical parameters include a typical dropout voltage of 150 mV 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, overcurrent protection, and thermal shutdown circuits. The component is housed in an HSNT-4 (1010) package and functions within an ambient temperature range of -40°C to +85°C.

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

• Integrated reverse current protection function prevents backflow from the output to the input pin without requiring external diodes.
• Built-in discharge shunt circuit rapidly discharges output capacitance when the ON/OFF pin is set to the OFF level.
• Constant current source pull-down ensures the ON/OFF pin defaults to the OFF state when left floating.
• Operational stability is maintained using ceramic capacitors of 1.0 μF or more on both input and output terminals.

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

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

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

Verify the specific product type suffix 'C' to confirm the inclusion of both the discharge shunt function and the constant current source pull-down feature. Ensure the ordering code matches the HSNT-4 (1010) package designation and the 3.4 V output voltage setting. Confirm compliance with lead-free and halogen-free environmental standards as specified in the datasheet.

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

Select this model for applications requiring low quiescent current and high ripple rejection. The C-type variant is suitable where internal pull-down and discharge capabilities are necessary. Verify that the application load does not exceed the 150 mA limit while considering the package's power dissipation constraints under varying ambient temperatures.

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

This component belongs to the S-13R1 series of positive voltage regulators developed using CMOS technology. The series is characterized by low dropout voltage, high-accuracy output, and low current consumption. The S-13R1C34-A4T2U3 specifically utilizes the HSNT-4 (1010) surface-mount package and incorporates the functional configuration defined for Series C products.

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

Substitute parts must match the 3.4 V fixed output, 150 mA current capacity, and HSNT-4 (1010) package dimensions. Verify compatibility regarding the ON/OFF logic active high status and the presence of reverse current protection and discharge shunt functions.

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

What is the behavior of the ON/OFF pin when it is left in a floating state?

For the S-13R1 Series C type, the ON/OFF pin is internally pulled down to the VSS pin in the floating status, which sets the VOUT pin to the VSS level and turns off the regulator.

How does the device handle reverse current flow?

The built-in reverse current detection circuit prevents current from flowing from the VOUT pin to the VIN pin, limiting the reverse current to a maximum of 0.09 μA.

What capacitor types are recommended for stable operation?

A ceramic capacitor of 1.0 μF or more can be used for both the input and output capacitors to ensure phase compensation and stable operation across the entire temperature range.