S-1333C31-A4T2U3

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

The S-1333C31-A4T2U3 is a positive voltage regulator IC from the S-1333 Series, manufactured by ABLIC Inc. using CMOS technology. It provides a fixed output voltage of 3.1 V with an accuracy of ±1.0%. The device operates within an input voltage range of 1.5 V to 5.5 V and supports an output current up to 300 mA. Key electrical characteristics include a typical dropout voltage of 160 mV at 100 mA, a ripple rejection ratio of 70 dB typ., and low current consumption of 25 μA during operation. It features built-in overcurrent protection and thermal shutdown circuits.

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

• Built-in ON/OFF circuit for power control
• Internal pull-down resistor on the ON/OFF pin
• Overcurrent protection and thermal shutdown circuits

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

• Constant-voltage power supply for portable communication devices
• Constant-voltage power supply for digital cameras
• Constant-voltage power supply for battery-powered devices

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

Verify the specific product type 'C' configuration, which includes an internal pull-down resistor but lacks a discharge shunt function. Confirm the HSNT-4 (1010) package designation matches the required footprint. Ensure input and output capacitors meet the minimum capacitance requirements for stability.

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

Select this component when a fixed 3.1 V output is required with high accuracy. The C-type variant is suitable if an internal pull-down resistor on the control pin is desired. Consider the thermal dissipation limits in the HSNT-4 package when designing for high load currents or elevated ambient temperatures.

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

This part belongs to the S-1333 Series of low dropout regulators. The series offers various output voltages selectable in 0.05 V steps and multiple package options including SOT-23-5 and HSNT-4 variants. The 'C' suffix denotes a specific functional configuration regarding the ON/OFF pin behavior.

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

S-1333C31-M5T1U3

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

Does the S-1333C31-A4T2U3 have a discharge shunt function?

No, the S-1333 Series C type does not have a built-in discharge shunt function.

What is the function of the internal pull-down resistor in this model?

The internal pull-down resistor ensures that the VOUT pin is set to the VSS level when the ON/OFF pin is in a floating status.