REG1118-2.85/2K5G4

Current - Output:	800mA
Base Part Number:	REG1118
Supplier Device Package:	SOT-223-4
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	56dB (120Hz)
Current - Quiescent (Iq):	7mA
Series:	--
Voltage Dropout (Max):	1.3V @ 800mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.85V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

REG1118-2.85/2K5G4 is a linear voltage regulator used to regulate the output voltage to a fixed value. It is specifically designed for applications requiring a low output voltage and high current. The device is available in an SOT-89 package and offers a wide input voltage range of 2.85 V to 5.5 V.

Application

REG1118-2.85/2K5G4 is mainly used in battery-operated systems such as laptops, mobile phones, tablets and medical equipment. The device is used to regulate the output voltage to a fixed value, allowing it to safely operate in such environments where input voltage may fluctuate. It also helps to maintain the necessary voltage requirements for circuits and prevent damage to the electronic parts.Additionally, the device can be used in various power circuits or applications. It is commonly used in battery charger circuits, overvoltage protection circuits, voltage dividers and current regulators.

Working Principle

The REG1118-2.85/2K5G4 linear voltage regulator consists of an internal voltage anchor that maintains a constant voltage output from the device. The device uses a differential amplifier to sense the input and output voltages and compare them. When the voltage difference between the input and output is more than a certain threshold, the internal voltage anchor will adjust the output voltage to match the input voltage.The device also has additional features such as a thermal protection circuit and an overvoltage protection circuit. The thermal protection circuit helps to limit temperature buildup, while the overvoltage protection circuit helps to prevent the device from operating under abnormally high input voltages.

Conclusion

REG1118-2.85/2K5G4 is a popular linear voltage regulator device that can be used in applications requiring a low output voltage and high current. The device uses an internal voltage anchor to maintain the output voltage at a fixed value and also has additional features such as overload protection and thermal protection circuits. The device is widely used in battery-operated systems, battery charger circuits and current regulators.

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