S-1333B24-A4T1U3

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

The S-1333B24-A4T1U3 is a positive voltage regulator IC from the S-1333 Series, manufactured by ABLIC Inc. It utilizes CMOS technology to provide a fixed output voltage of 2.4 V with an accuracy of ±1.0%. The device supports an input voltage range of 1.5 V to 5.5 V and delivers up to 300 mA of output current. Key electrical characteristics include a typical dropout voltage of 160 mV at 100 mA, a quiescent current of 25 μA during operation, and ripple rejection of 70 dB typ. at 1.0 kHz. It operates within a temperature range of -40°C to +85°C.

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

• Built-in discharge shunt function for rapid output capacitor discharge when powered off
• Integrated overcurrent protection circuit to limit excessive output current
• Thermal shutdown circuit prevents damage caused by overheating
• ON/OFF control pin allows for significant reduction in current consumption

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

• Constant-voltage power supply for portable communication devices
• Power supply for battery-powered digital cameras
• Voltage regulation for digital audio players
• Constant-voltage power supply for home electric appliances

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

Verify the specific package type HSNT-4 (0808) and the B-type functional configuration against project requirements. Confirm that the ON/OFF pin handling aligns with the B-type specification, which lacks an internal pull-down resistor. Ensure external capacitors meet the minimum capacitance requirements for stability.

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

Select this component for applications requiring a fixed 2.4 V output with low quiescent current. The B-type variant is suitable when discharge shunt functionality is desired but an internal pull-down on the ON/OFF pin is not required. Consider the thermal dissipation limits of the HSNT-4 (0808) package under high load conditions.

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

This part belongs to the S-1333 Series of 5.5 V input, 300 mA voltage 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 B-type designation indicates specific internal logic features regarding the ON/OFF pin and discharge functions.

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

S-1333B24-A4T2U3: Same electrical specifications and B-type features, but housed in the HSNT-4 (1010) package instead of HSNT-4 (0808). Verify footprint compatibility before substitution.