LM140K-12

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LM140K-12 Application Field and Working Principle

The LM140K-12 is an adjustable precision positive voltage regulator that belongs to a family of low-dropout voltage regulators (LDOs). This type of voltage regulator is designed for use in applications that require tight regulation of the output voltage. It has a wide range of operation and its output voltage can be adjusted from 1.0V to 12V with ±2% precision. It has a maximum output current of 1.0A and an input voltage range of 2.7V to 12V.

Features of LM140K-12

• Requires only two external components.
• Stable with loads down to 2mA.
• Very low dropout voltage.
• Voltage is adjusted with an external resistor.
• Compact and surface mountable.

Application Field

The LM140K-12 voltage regulator can be used in a variety of applications where precision voltage regulation is required, such as portable and automotive electronics, audio systems, medical equipment, test and measurement systems and power converters.

Working Principle

The LM140K-12 voltage regulator is an adjustable, low-dropout (LDO) regulator capable of supplying up to 1A of current. It has an input voltage range of 2.7V to 12V and an output voltage range of 1.0V to 12V. The output voltage can be adjusted by inserting a resistor between the output and the ADJ pin. The ADJ pin is connected to a voltage divider inside the regulator, which sets the output voltage.

The LM140K-12 has an internal error amplifier that compares the output voltage to an internal reference voltage. If the output voltage is higher than the reference voltage, the error amplifier will reduce the output current and lower the output voltage. If the output voltage is lower, the error amplifier will increase the output current and raise the output voltage to the desired level. This process ensures that the output voltage remains within a few percentage points of the set value.

The LM140K-12 also has internal current and thermal protection circuits that help prevent damage caused by excessive or excessive currents and heat. These protection circuits can be bypassed by connecting the BYPASS/SHUTDOWN pin to ground. This allows the regulator to continue to operate even if the main power is disconnected or if the output current is exceeded.

Conclusion

The LM140K-12 is an adjustable, low-dropout (LDO) voltage regulator capable of supplying up to 1A of current. It has a large input voltage range and a wide output voltage range that can be adjusted using an external resistor. The regulator provides very precise regulation and has a variety of protection circuits to prevent damage from excessive current, heat, or disconnection of power. It is well-suited for applications where precision voltage regulation is critical and can be used in a wide range of applications from portable electronics to automotive electronics.

The specific data is subject to PDF, and the above content is for reference