LP3907SQ-JXQX/NOPB

Working Principle

The LP3907SQ-JXQX/NOPB voltage regulator device works by using an external N-FET transistor to create an adjustable output voltage. The N-FET transistor’s RDS-ON value is used to create the output voltage. The LP3907SQ-JXQX/NOPB is supplied with an enable signal to ensure the device is powered up and ready to work. When the enable signal is given, the N-FET transistor is turned on and the voltage is either output through a high side or low side combination.

Broadly speaking, the LP3907SQ-JXQX/NOPB voltage regulator works in two stages: an internal linear regulator and the external buck converter. The internal linear regulator of the device helps to stabilize the voltage at a certain voltage. The external buck converter helps to adjust the voltage output by changing the voltage level by modulating the duty cycle of the external controller IC. This enables LP3907SQ-JXQX/NOPB voltage regulator to generate an adjustable output voltage.

Applications

LP3907SQ-JXQX/NOPB is particularly suitable for mobile and battery powered devices with a limited amount of space. Due to its small size, it is the perfect choice for designing small portable products such as tablets, smartphones, and other portable electronic devices. It is also used in a variety of automotive applications due to its wide temperature range, low power consumption and fast response time.

It can also be used in home audio systems and commercial audio systems where fast voltage regulation is important. The high-frequency switching of the device provides noise-free audio output.