S-1206B45-M3T1G

Voltage Dropout (Max):	0.23V @ 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):	4.5V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

The S-1206B45-M3T1G is a Linear Voltage Regulator manufactured by Sanken Electric Co., Ltd.. The S-1206B45-M3T1G is part of the PMIC (Power Management Integrated Circuits) family of components. This application note discusses the application field and working principle of the S-1206B45-M3T1G Linear Voltage Regulator.

Application Field

The S-1206B45-M3T1G is a low power consumption, low dropout Linear Voltage Regulator designed to provide adjustable, high-accuracy output voltages for applications requiring an IC solution for power regulation. It is suitable for applications such as digital audio equipment, home entertainment systems, industrial and general purpose electronics, and portable communications equipment. The S-1206B45-M3T1G can provide up to three (3) output voltages, with a maximum output current of 700mA. The output voltage of the device is adjustable by setting a resistive divider between the output and adjust pins. The maximum operating temperature of the device is 105 degrees Centigrade and it is available in a TO-220F package.

Working Principle

The S-1206B45-M3T1G Linear Voltage Regulator works on the principle of a voltage series regulator. This type of regulator works by comparing the input voltage with the output voltage through a series of transistors. When the input voltage is higher than the output voltage, the transistors are driven in a manner that causes the output voltage to decrease until the two voltages are equal.The S-1206B45-M3T1G linear voltage regulator incorporates a number of features to ensure stability and reliable performance. It has a temperature compensation circuit to compensate for changes in operating temperature, and a current limit circuit to protect the device from overloads. It also has a low dropout voltage, meaning that the output voltage remains stable even with a large input voltage differential. The S-1206B45-M3T1G can be configured to provide either a fixed output voltage or a variable output voltage via an adjustable output resistor. It also includes short-circuit protection and current limit protection, ensuring that the device’s maximum operating current is not exceeded. Finally, the S-1206B45-M3T1G includes a number of safety features, including overvoltage protection, over temperature protection and current limit protection, ensuring that the device is protected from both accidental and intentional over-currents.

Conclusion

The S-1206B45-M3T1G is a low power consumption, low dropout linear voltage regulator designed for applications requiring an IC solution for power regulation. It is suitable for digital audio equipment, home entertainment systems, industrial and general purpose electronics, and portable communications equipment. The S-1206B45-M3T1G works on the principle of a voltage series regulator, and includes temperature and current limit protection circuits, as well as overvoltage and over temperature protection.

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