S-1172B31-E6T1G

Current - Output:	1A
Supplier Device Package:	6-HSOP
Package / Case:	6-SOIC Variation (0.154", 3.9mm Width), 4 Leads + 2 Fins
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Thermal Shutdown
Control Features:	Enable
PSRR:	60dB (1kHz)
Current - Supply (Max):	90µA
Current - Quiescent (Iq):	1µA
Series:	S-1172
Voltage Dropout (Max):	0.1V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.1V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Overview of S-1172B31-E6T1G

The S-1172B31-E6T1G is an ultra-low-dropout (ULDO) regulator that is part of the S-1172 line. It is a linear voltage regulator, also known as a line-regulated voltage regulator, that provides a constant voltage output from a varying input voltage. The S-1172B31-E6T1G is designed to be “ultra-low dropout”, meaning it is able to provide a constant low output voltage with very little energy lost to heat. This makes it the ideal voltage regulator for use in battery powered applications which require a constant voltage.

Applications for the S-1172B31-E6T1G

The S-1172B31-E6T1G is designed to be used in low voltage, low current applications such as power supply solutions for portable devices, automotive electronics, personal electronics, IoT and wireless communications, and wireless sensor networks. It’s small size and ULDO feature make it ideal for these types of applications where a constant voltage output is needed but minimal energy is available.

Working Principle of the S-1172B31-E6T1G

The working principle of the S-1172B31-E6T1G is relatively simple. It utilizes a positive feedback loop to maintain a constant reference voltage across the input and output of the regulator. This is done by using an operational amplifier with an adjustable gain that is connected in series to the reference voltage. The output of the operational amplifier is connected to the input pin of the regulator. When the input voltage exceeds the reference voltage, the operational amplifier increases the gain, causing the output voltage of the operational amplifier to increase. This in turn causes the regulator to reduce the amount of current flowing from the input to the output, resulting in a decrease in the output voltage. Conversely, if the input voltage drops below the reference voltage, the operational amplifier decreases the gain, resulting in an increase in the current flowing from the input to the output and consequently an increase in the output voltage.

Advantages of the S-1172B31-E6T1G

The S-1172B31-E6T1G is a high performance regulator with a variety of advantages. These include:

• Ultra-Low Dropout (ULDO) Performance: The S-1172B31-E6T1G is designed with a low 0.7mΩ dropout voltage rating, enabling it to provide a constant voltage output in even the most challenging power supply environments.
• Wide Input Voltage Range: The S-1172B31-E6T1G is designed with a wide 4.5V-18V operating voltage range, making it suitable for a variety of applications.
• High Efficiency: The S-1172B31-E6T1G is designed for high efficiency, reducing energy loss to heat and therefore prolonging the life of your battery powered device.
• Wide Output Voltage Range: The S-1172B31-E6T1G is designed with a wide range of output voltages, allowing you to use it in a variety of applications.
• High Accuracy Output Voltage: The S-1172B31-E6T1G is designed with an exceptionally stable output voltage (1.2% Accuracy), ensuring that your device always has the right voltage.
• Low Quiescent Current: The S-1172B31-E6T1G is designed with a low quiescent current, reducing energy loss and enabling it to be used in battery powered applications.

Conclusion

The S-1172B31-E6T1G is an ideal voltage regulator for applications which require a constant output voltage and low power consumption. Its ULDO performance and wide input and output voltage ranges make it suitable for use in a variety of applications. Its low quiescent current and high accuracy output voltage guarantee that your device always has the right voltage. With its wide range of features and its easy-to-use design, the S-1172B31-E6T1G is the ideal voltage regulator for your application.

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