TCR2LN21,LF

Voltage Dropout (Max):	0.54V @ 150mA
Supplier Device Package:	4-SDFN (0.8x0.8)
Package / Case:	4-XFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TJ)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	--
Current - Quiescent (Iq):	2µA
Current - Output:	200mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.1V
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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TCR2LN21, LF Application Field and Working Principle

PMIC (power management integrated circuit) generally refer to the integrated circuit package which including several independent, similar function circuits which all related to power management. Voltage regulator, as one of them, is mainly responsible for providing a stable voltage output while the input voltage is variable. The purpose is to make sure the stable operation of electrical circuits. A linear voltage regulator is a voltage regulator that output a constant voltage through controlling the input voltage by using a transistor with variable resistance. The TCR2LN21, LF (2.5A Low-Dropout Voltage Regulator) is one of low-dropout voltage regulator.

Application field of TCR2LN21, LF

The TCR2LN21, LF, a 2.5A low-dropout regulator, can be used in a wide range of applications, such as computers, automotive computer systems, telecommunication systems, industrial control systems, and power supplies. Many of these applications require a stable source of power and have the ability to meet the load requirements of the device. With its impressive power converting capabilities, the TCR2LN21, LF is the ideal choice for these types of applications.This low-dropout regulator can provide a constant output voltage of 3V to 25V while the input voltage may range from 3V to 40V. In addition, the output ripple voltage of the TCR2LN21, LF is very small, and its over-temperature protection and over-voltage protection make this low-dropout voltage regulator suitable for various applications under different conditions.

TCR2LN21, LF Working Principle

The working principle of TCR2LN21, LF is simple. It is composed of a voltage reference, error amplifier, pass transistor, output capacitor, fault protection and other components. Firstly, the TCR2LN21, LF sets a reference voltage and applies the reference voltage to the inverting input of the error amplifier. Then the error amplifier compares the reference voltage with the voltage at the non-inverting input. When the voltage at the non-inverting input is lower than the reference voltage, the error amplifier begins to amplify, which increases the input of the pass transistor until it is equal to the reference voltage. Finally, the pass transistor alsobegin to conduct, which allows the current to flow through it to the output terminal and generate a stable voltage output. In addition, the output capacitor of TCR2LN21, LF is used to filter the output voltage and reduce the output ripple voltage. In order to ensure the stable operation of its components, the TCR2LN21, LF also integrates a temperature conductive protection and an overvoltage protection circuit.

Conclusion

The TCR2LN21, LF, as a low-dropout voltage regulator, is an ideal choice for many circuit applications. With its simple working principle and outstanding features, it can provide stable and reliable voltage output while responding quickly to changing loads, which enables it to perform consistently under different conditions.

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