S-1137A31-U5T1U

Current - Output:	300mA
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:	Over Current
Control Features:	Enable, Soft Start
PSRR:	70dB (1kHz)
Current - Supply (Max):	65µA
Current - Quiescent (Iq):	1µA
Series:	S-1137
Voltage Dropout (Max):	0.31V @ 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:	Active
Packaging:	Tape & Reel (TR)

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Introduction
The S-1137A31-U5T1U is an automotive, low voltage linear regulator regulator manufactured by the Japanese semiconductor and communications equipment manufactuer Renesas Electronics. The S-1137A31-U5T1U is part of Renesas’ U-Series of linear voltage regulators and is designed for a wide range of consumer, automotive, and industrial applications, such as power management circuits, motor control, and more. The S-1137A31-U5T1U is suitable for applications that require high switching accuracy.
Features
The S-1137A31-U5T1U is an automotive, low voltage linear regulator regulator featuring a low quiescent current of 18 uA and low output noise making them suitable for a wide range of automotive and industrial applications. The device also features an input voltage range from 4.5V to 36V and an adjustable output voltage range from 1.2V to 37V. Additionally, the S-1137A31-U5T1U comes with over-temperature protection and short-circuit protection to ensure reliable, safe operation.
Application Fields
The S-1137A31-U5T1U is suitable for applications that require a low voltage linear regulator. The device is suitable for applications such as power management, motor control, and other automotive, consumer and industrial applications. The features of the S-1137A31-U5T1U make it highly suitable for automotive and industrial applications, as it can operate reliably over a wide range of load conditions and temperatures. Additionally, the device is well-suited for applications that require high switching accuracy.
Working Principle
The S-1137A31-U5T1U is a low voltage linear regulator regulator that works by a simple adjustment of the reference voltage Vref. When the input voltage is applied to the device, Vref is set in the divider voltage to the ground. The error amplifier then compares the output voltage to the Vref voltage. The amplifier then adjusts the output voltage via the internally controlled PMOS transistor. The output voltage is adjusted based on the error amplifier’s comparison, thereby controlling the output voltage at the desired setpoint. Furthermore, the S-1137A31-U5T1U employs low output noise technology making it highly suitable for applications that require high switching accuracy.
Conclusion
In conclusion, the S-1137A31-U5T1U is suitable for a wide range of applications such automotive, consumer and industrial applications, such as power management, motor control, and more.The device features a low quiescent current, low output noise, an adjustable output voltage range, and over-temperature and short-circuit protection. The S-1137A31-U5T1U works by adjusting the reference voltage of the output voltage, and controlling the output voltage to the desired setpoint via the error amplifier. The device’s features and working principle make the S-1137A31-U5T1U an ideal solution for applications that require a low voltage linear regulator.

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