S-1333A11-A4T1U3

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

The S-1333A11-A4T1U3 is a positive voltage regulator IC from the S-1333 Series, developed using CMOS technology. It features an input voltage range of 1.5 V to 5.5 V and provides a fixed output voltage of 1.1 V with ±1.0% accuracy (±15 mV for outputs below 1.5 V). The device supports up to 300 mA output current and operates within a temperature range of -40°C to +85°C. It includes built-in overcurrent protection and thermal shutdown circuits.

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

• Built-in discharge shunt function for rapid output capacitor discharge when powered off
• Internal pull-down resistor on the ON/OFF pin ensures defined logic states
• High ripple rejection capability with ceramic capacitors of 1.0 μF or more
• Low dropout voltage characteristics optimized for battery-powered applications

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

• Constant-voltage power supply for portable communication devices
• Power regulation for digital cameras and digital audio players
• Battery-powered electronic devices requiring low quiescent current

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

Verify the specific package type HSNT-4 (0808) and the A-type functional configuration against the datasheet before procurement. Confirm that the ordering suffix matches the required tape and reel specifications. Ensure compatibility with lead-free and halogen-free manufacturing processes as specified by the environmental code U.

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

Select this component for designs requiring a fixed 1.1 V output with high accuracy. The A-type variant is suitable when both discharge shunt and pull-down functions are necessary. Evaluate thermal dissipation capabilities if operating near maximum load currents. Ensure input and output capacitors meet the minimum 1.0 μF requirement for stability.

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

This part belongs to the S-1333 Series of low-dropout regulators manufactured by ABLIC Inc. The series utilizes CMOS process technology to achieve low current consumption and high ripple rejection. The S-1333A11-A4T1U3 specifically denotes the A-type function set, 1.1 V output, and HSNT-4 (0808) package configuration.

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

Direct substitutes include other S-1333 Series variants with identical electrical characteristics but different packages or output voltages, such as S-1333A11-M5T1U3 for SOT-23-5 packaging. Cross-series replacements require verification of pinout compatibility and thermal performance.