S-1142A30H-E6T2U

Series:	S-1142A/BxxH
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	50V
Voltage - Output (Min/Fixed):	3V
Voltage - Output (Max):	--
Voltage Dropout (Max):	0.72V @ 200mA
Current - Output:	200mA
Current - Quiescent (Iq):	2.5µA
Current - Supply (Max):	9µA
PSRR:	45dB (100Hz)
Control Features:	Enable
Protection Features:	Over Current, Thermal Shutdown
Operating Temperature:	-40°C ~ 105°C (TA)
Mounting Type:	Surface Mount
Package / Case:	6-SOIC Variation (0.154", 3.9mm Width), 4 Leads + 2 Fins
Supplier Device Package:	6-HSOP

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Introduction to S-1142A30H-E6T2U

The S-1142A30H-E6T2U is a Linear Voltage Regulator, which belongs to the category of PMIC-Voltage Regulators. It is a low-dropout regulator featuring excellent precision, low quiescent current, an enable pin, and thermal shutdown in a miniature package. This device is designed to provide up to 30V regulated output voltage from a supply voltage of 1.2 to 28V in various voltage applications such as DC/DC regulator, Post Regulation, Charge Pump, or OC Protectors.

Application Field and Working Principle of S-1142A30H-E6T2U

Application Field

The S-1142A30H-E6T2U is mainly used in low-dropout voltage regulators and charge pumps. Specifically, it is suitable for designing low-dropout voltage regulators such as automotive DC/DC converter, embedded systems, and home electronics; charge pumps such as standby supplies and load switches; post regulation circuits such as linear and switching supplies; and OC Protectors such as telecom communication equipment. Having an adjustable output current limiting feature, the S-1142A30H-E6T2U is good for applications requiring current limiting such as automotive electronics and general-purpose industrial/medical equipment. The S-1142A30H-E6T2U also features an enable pin, thermal shutdown, and short-circuit protection for better safety and reliability. In addition, the S-1142A30H-E6T2U allows for easy calibration by utilizing the external resistor and adjustable output voltage. This adjustable voltage is suitable for battery-based systems that require constant voltage.

Working Principle

The S-1142A30H-E6T2U works on the basic principle of linear voltage regulation. This device is a low dropout voltage regulator with excellent precision. It operates as a series pass element and has two main sections: output stage with feedback circuit and load stage. The output stage includes an error amplifier, a reference voltage, and a voltage divider, and the voltage divider provides the adjust pin which is used to adjust the output voltage. The error amplifier maintains the output voltage with the reference voltage. The load can be connected at the output stage via a pass transistor.The feedback circuit helps to maintain a constant voltage at the output despite any changes in the input or load current. The feedback circuit also helps to maintain the output current within the specifications. Furthermore, an enable pin is incorporated in the S-1142A30H-E6T2U for better safety and reliability. Lastly, short-circuit protection is provided by an internal thermal shutdown circuit, which will shut down the device when the device temperature exceeds the thermal shutdown limit. Furthermore, it offers up to 30V regulated output voltage from a supply voltage of 1.2 to 28V.

Conclusion

The S-1142A30H-E6T2U is a linear voltage regulator with excellent precision, low quiescent current, an enable pin, and thermal shutdown in a miniature package. Its adjustable output current limiting feature is suitable for automotive electronics and general-purpose industrial/medical equipment. Furthermore, it allows for easy calibration making it suitable for battery-based systems that require constant voltage. This device works on the basic principle of linear voltage regulation and provides up to 30V regulated output voltage from a supply voltage of 1.2 to 28V.

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