S-1333D27-M5T1U3

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

The S-1333D27-M5T1U3 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 2.7 V with an accuracy of ±1.0%. The device supports an input voltage range of 1.5 V to 5.5 V and can deliver up to 300 mA of output current. Key electrical characteristics include a typical dropout voltage of 160 mV at 100 mA, a typical ripple rejection of 70 dB at 1.0 kHz, and a typical operating current consumption of 25 μA. It operates within an ambient temperature range of -40°C to +85°C.

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

• Built-in overcurrent protection circuit limits excessive output current to protect the output transistor.
• Thermal shutdown circuit prevents damage caused by overheating when junction temperature exceeds specified limits.
• ON/OFF pin controls operation status, allowing for significant reduction in current consumption during power-off.

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

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

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

Verify the specific product type 'D' configuration, which lacks both discharge shunt and pull-down resistor functions, against system requirements. Confirm that the SOT-23-5 package meets thermal dissipation needs under maximum load conditions. Ensure input and output capacitors are ceramic types with capacitance of 1.0 μF or more for stability. Check RoHS compliance status as indicated in official documentation.

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

Select this component when a fixed 2.7 V output is required with low quiescent current. The D-type variant is suitable for applications where internal discharge and pull-down functions are unnecessary or undesirable. Consider the 160 mV typical dropout voltage for efficiency near the minimum input voltage. Evaluate thermal performance based on the SOT-23-5 package power dissipation limits.

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 developed using CMOS technology. The series offers selectable output voltages from 1.0 V to 3.5 V in 0.05 V steps. The S-1333D designation indicates a specific functional configuration within the series, distinguished by its ON/OFF logic and absence of internal discharge or pull-down circuits.

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

What is the function of the NC pin on the SOT-23-5 package?

The NC pin is electrically open. It can be connected to the VIN pin or the VSS pin if needed for layout purposes, but it serves no active function.

How does the S-1333D type handle the ON/OFF pin internally?

The S-1333D type has no internal pull-up or pull-down resistor on the ON/OFF pin. It must not be left floating; if unused, it should be connected to the VIN pin.