TCR2LN18,LF Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	5.5V
Voltage - Output (Min/Fixed):	1.8V
Voltage - Output (Max):	--
Voltage Dropout (Max):	0.6V @ 150mA
Current - Output:	200mA
Current - Quiescent (Iq):	2µA
PSRR:	--
Control Features:	Enable
Protection Features:	Over Current
Operating Temperature:	-40°C ~ 85°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	4-XFDFN Exposed Pad
Supplier Device Package:	4-SDFN (0.8x0.8)

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Introduction:

TCR2LN18 is a type of linear voltage regulator which is widely used in Power Management ICs (PMICs). It is designed to provide consistent and reliable power to various electronic applications. It is used to regulate input power so that the output voltage is maintained within a specified range even when the input voltage fluctuates. TCR2LN18 is also known as a low-dropout (LDO) linear regulator, as it can operate with an input-output voltage difference as low as 1V. It is ideal for applications requiring low power consumption and tight output voltage stability.

Application Fields:

TCR2LN18 is commonly used in a wide range of applications such as cell phones, computers, portable electronics, automotive and industrial systems. Its ability to provide high current and low-dropout voltage makes it suitable for these applications. It is also suitable for low-power applications due to its low power consumption and small footprint.

Benefits of Using TCR2LN18:

The use of TCR2LN18 provides numerous benefits to the user. It has low quiescent current and high accuracy, which makes it suitable for low-power applications. Furthermore, it has low thermal resistance, which ensures that the temperature rise within the device is minimal. It also has high power supply rejection ratio (PSRR), which ensures that the output voltage does not vary significantly with changes in the input voltage.

Working Principle of TCR2LN18:

The TCR2LN18 utilizes a three-terminal architecture, which consists of an input, an output, and a ground terminal. The input voltage is applied to the input terminal and is regulated by an internal voltage reference, which maintains the output voltage at a set level. The input voltage is then switched using a P-MOS pass transistor and supplied to the output terminal.The circuit diagram of the TCR2LN18 consists of a voltage divider and an error amplifier. The voltage divider splits the input voltage and a reference voltage is applied to the error amplifier. The output of the error amplifier is then fed to the gate of the pass transistor. The error amplifier compares the output voltage to the reference voltage and closes the pass transistor when it is exceeding the reference voltage. This reduces the output voltage and increases the output current. The error amplifier is designed to maintain a constant output voltage when the input voltage is varied.

Conclusion:

TCR2LN18 is one of the most popular linear voltage regulators used in PMICs. It has low power consumption, low quiescent current, and high accuracy, which makes it suitable for low-power applications. It also has high PSRR and low thermal resistance, which ensures that the temperature rise within the device is minimal. Its three-terminal architecture and error amplifier circuit allows it to maintain a constant output voltage over varying input voltage.

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