S-1137A22-M5T1U

Current - Output:	300mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
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):	0.38V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.2V
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

S-1137A22-M5T1U is a very popular Voltage Regulator in the Linear range. It is widely used in many different devices and in countless applications. This article will discuss the application field and working principle of the S-1137A22-M5T1U.

Applications

The S-1137A22-M5T1U is a low power, low dropout (LDO) linear voltage regulator. It is ideal for applications that require a stable voltage source with a wide input voltage range and low output variance. Its small size makes it especially suited for portable devices. It can be used in cell phones, portable audio players, GPS systems, and other consumer electronics and communication devices.

Features

The S-1137A22-M5T1U provides all the features of a typical linear voltage regulator, such as load regulation, output voltage accuracy, low noise, good line regulation, and low power dissipation. It has a wide range of input voltage options, ranging from 2.7V to 5.5V, and a wide output voltage range of 0.3V to 5V. It is also very efficient, dissipating only 1.3mW in normal conditions. It also has over-current and over-voltage protection features.

Working Principle

The S-1137A22-M5T1U follows a basic linear voltage regulation principle. It has a power MOSFET, which acts as an electronic switch to control the flow of electricity from the input to the output. The MOSFET is connected to a comparator which monitors the voltage of the output and the reference voltage. When the output voltage and the reference voltage are not the same, the comparator generates a triggering signal, and the MOSFET opens or closes to change the output voltage to match the reference voltage.

Conclusion

The S-1137A22-M5T1U is a popular and powerful linear voltage regulator. It is perfect for small electronics and portable devices, due to its small size and wide input voltage range. It also has all the features and protections of a typical linear voltage regulator, including load regulation, line regulation, low noise, and over-current and over-voltage protection. Lastly, it operates on a basic linear voltage regulation principle, with a power MOSFET connected to a comparator to monitor and control the voltage flow from the input to the output.

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