S-1333D18-A4T1U3

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PMIC - Voltage Regulators - Linear

The S-1333D18-A4T1U3 is a silicon-based linear voltage regulator. This type of regulator is used to regulate AC or DC input voltage from an unregulated source and provide a stable, constant voltage output. The S-1333D18-A4T1U3 is designed to output a fixed voltage of 1.8V, ±0.15V, with a tolerance of ±3%, minimum loading current of 0.01A and minimum operating temperature of -20°C. It supports a maximum input voltage of 5.5V and output current of 300mA.

The S-1333D18-A4T1U3 is a versatile regulator that is ideal for applications such as powering microcontrollers, FPGAs, ASICs, DSPs and other devices that require a low voltage, high current power source. Its features include low dropout voltage and low quiescent current, making it a cost-effective solution for a variety of small and medium power applications. It is also RoHS compliant and available in an SOIC-8 and SOT-89-3 package.

Working Principle

The S-1333D18-A4T1U3 is composed of two major components: an operational amplifier and a pass transistor. The operational amplifier forms the error signal, which is amplified and compared to a reference voltage, and the pass transistor is used to increase or decrease current according to the error signal. The regulated voltage is then outputted.

The operational amplifier increases the signal level to a level where it can be compared to the reference voltage, and the pass transistor acts as a current-controlled switch, allowing the current to flow from input voltage to the output voltage – thus regulating the voltage. This simple process can be used to monitor the input voltage and adjust the output voltage to remain constant, regardless of system conditions or load changes.

Advantages

• Low Dropout Voltage: The S-1333D18-A4T1U3 has a low dropout voltage of 332mV, which means it can easily regulate input voltages within a range of only 0.332V at the output. This offers high efficiency and helps reduce system power consumption.
• Low Quiescent Current: The quiescent current of the S-1333D18-A4T1U3 is just 50uA, which is much lower than other linear voltage regulators. This low quiescent current helps extend the battery life of portable devices.
• Fixed Output Voltage: The fixed output of 1.8V helps keeping the system stable. This eliminates the need to monitor the input voltage and adjust the output voltage.

Applications

The S-1333D18-A4T1U3 is used in a wide range of applications including:

• Consumer Electronics: The S-1333D18-A4T1U3 is used in consumer electronic devices such as LCD TVs, mobile phones, tablets, digital cameras, and gaming consoles.
• Industrial Equipment: The S-1333D18-A4T1U3 is used in industrial equipment such as industrial controllers, HVAC systems, LED lighting, RF power amplifiers, and medical devices.
• Automotive: The S-1333D18-A4T1U3 is used in automotive electronics such as ECU, airbag systems, navigation systems, and infotainment systems.
• Testing and Measurement: The S-1333D18-A4T1U3 is used in testing and measuring equipment such as oscilloscopes, signal generators, and lab power supplies.

Conclusion

The S-1333D18-A4T1U3 is a versatile linear voltage regulator that is suitable for a wide range of low-voltage and high-current applications. It offers a low dropout voltage and a low quiescent current, making it an efficient and cost-effective choice for applications requiring constant and stable output voltage.

The specific data is subject to PDF, and the above content is for reference