S-1206B18-M3T1U

Voltage Dropout (Max):	0.5V @ 100mA
Supplier Device Package:	SOT-23-3
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	1.5µA
Current - Output:	250mA
Series:	S-1206
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview of S-1206B18-M3T1U Application Field and Working Principle
The S-1206B18-M3T1U is a low-dropout (LDO) linear regulator designed for applications needing high precision and low noise. It belongs to the PMIC - Voltage Regulators - Linear category and features current limiting, thermal overheat shutoff, voltage sensing circuitry and reverse supply protection. This combination makes it an ideal choice for numerous applications, including notebook computers and modems.
Current Limiting
The current limiting feature of the S-1206B18-M3T1U works to protect the device from damage due to high output current. When the output current exceeds the set limit, the voltage drop surpasses the set level, reducing the value of the feedback signal. The lack of feedback activates a shutdown circuit which will turn off the device and protect it from any damage.
Thermal Overheat Shutoff
The thermal overheat shutoff feature of the S-1206B18-M3T1U protects the device from overheating while in operation. When the internal temperature exceeds the set limit, an integrated thermal sensor detects the change and shuts off the device. This prevents further heating and any unintentional damage to the device.
Voltage Sensing Circuitry
The voltage sensing circuitry of the S-1206B18-M3T1U is an integrated circuit that delivers a range of adjustable voltages. This feature allows the device to operate with a wide variety of input voltages, making it suitable for a range of applications. The circuitry also helps to maximize efficiency and reduce power losses.
Reverse Supply Protection
The reverse supply protection of the S-1206B18-M3T1U is a safety feature which prevents the input voltage from exceeding the set levels. This ensures the stability of the output voltage and prevents any damage due to an excess of current.
Applications of the S-1206B18-M3T1U
The S-1206B18-M3T1U is an ideal choice for a range of applications, including notebook computers and modems. Its low-dropout design provides a low-voltage, highly accurate output, while its current limiting, thermal overheat shutoff, voltage sensing circuitry, and reverse supply protection make it a safe and reliable choice. Additionally, its high efficiency and low noise make it suitable for more complex applications, such as 3D graphics.
Conclusion
The S-1206B18-M3T1U is a versatile, low-dropout linear regulator that is suitable for a wide range of applications. Its current limiting, thermal overheat shutoff, voltage sensing circuitry, and reverse supply protection features offer added safety and reliability for any system that utilizes it. Therefore, it is a highly recommended choice for any project that requires a highly accurate, low-voltage output.

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