LM337KCE3

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LM337KCE3 is an adjustable negative voltage regulator, which is one of the most popular linear voltage regulators. As a member of Linearregulators, it provides a low-power and low-noise voltage regulation, enabling it to be used in all types of electronic equipment. The LM337KCE3 is available in a small TO-92 package and can be used with an external resistor to set the output voltage anywhere between -1.5V and -37V.

Application Field

The LM337KCE3 is mainly used in any kind of applications where a reliable and highly accurate voltage regulation is required. It is usually used for low-power, low-noise voltage regulator in power supply system. It is also suitable for RF amplifier, precision amplifier, PLL/VCO linear power supply, medical instruments and temperature compensation.

Working Principle

The LM337KCE3 is a three-terminal, adjustablenegative voltage regulator with TO-92 package which operates over a wide range of input and output voltages, from -1.5V to -37V. It can be used to regulate the output of any DC power supply. In the circuit, controlling the gate of a pass transistor changes the amount of current flowing through the power transistor, thus controlling the output voltage.

The LM337KCE3 has two voltage terminals, one enable terminal and a reference terminal. The enable terminal allows the user to control the output voltage. The reference terminal supplies a reference voltage from which the output voltage will be derived. The output voltage is set by two external resistors. The two resistors form a voltage divider and the output voltage is set by the ratio of the resistor values.

The LM337KCE3 is able to provide an output voltage throughout a wide range and is easy to use. Its output voltage can be accurately and easily set by connecting an external resistor between the enable and reference terminals. The voltage at the output is directly proportional to the ratio of the two resistors and is stable regardless of changes in temperature.

Conclusion

The LM337KCE3 is a three-terminal adjustable negative voltage regulator with TO-92 package. It is ideal for applications requiring low power and low-noise voltage regulation such as RF amplifier, precision amplifier, PLL/VCO linear power supply, medical instruments, temperature compensation and etc. It uses an external resistor to control the output voltage from -1.5V to -37V and the output voltage is stable regardless of changes in temperature.

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