S-873355AUP-OACT2U

Voltage Dropout (Max):	0.7V @ 30mA
Supplier Device Package:	SOT-89-5
Package / Case:	SOT-89-5/6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Short Circuit
Control Features:	Voltage Detection
PSRR:	--
Current - Quiescent (Iq):	8µA
Current - Output:	30mA
Series:	S-87x
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	24V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The S-873355AUP-OACT2U is a linear voltage regulator designed to provide a high level of voltage stability and regulated output power over a wide range of temperatures and load conditions. This component is ideal for applications requiring reliable performance and low power dissipation, such as remote/ wireless terminals and medical/industrial systems. The device provides an output voltage range of 1.5V to 5.5V, with a typical dropout voltage of 0.45V at 2A source current.

Application Field

Due to its high level of voltage stability, low power dissipation and wide operating temperature range, the S-873355AUP-OACT2U is suitable for a wide variety of applications. In consumer market applications, the component can be used for USB port, hard disk drive and consumer communication transceiver applications. In automotive applications, the component is used for systems such as Engine Management, Advanced Driver Assistance Systems (ADAS) and various other driver assistance systems. It is also suitable for use in industrial and medical equipment applications such as medical imaging equipment and medical test instruments.

Working Principle

The S-873355AUP-OACT2U utilizes a three-terminal regulator configuration that consists of an input terminal (Vin), an output terminal (Vout), and a sense terminal (Vref). The input voltage, which must be higher than the output voltage, is applied to the input terminal. The output voltage is determined by the voltage applied to the reference (Vref) terminal. This voltage is then compared to a feedback voltage to create a differential voltage (Vref – Vout). The differential voltage is then converted to a current, which is supplied to the output terminal to maintain the output voltage.The device also incorporates current limiting and thermal shutdown protection, to help protect the device from damage due to overload or excessive temperatures. When the current limit is reached, the output voltage will start to decrease rapidly and the device will begin to dissipate a significant amount of power. Also, when the internal temperature of the device reaches a preset threshold, the thermal protection circuit will shut the device down.

Conclusion

The S-873355AUP-OACT2U is an ideal linear voltage regulator for a wide range of applications requiring stable voltage and low power dissipation. This component features an input voltage range of 1.5V to 5.5V, with a typical dropout voltage of 0.45V at 2A source current. It also features current limiting and thermal protection for overload or over temperature conditions. This component is well-suited for use in consumer, automotive, industrial, and medical equipment applications.

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