LTC1142CG#TRPBF

LTC1142CG#TRPBF Application Field and Working Principle

The LTC1142CG#TRPBF is a low-power CMOS voltage regulator controller that is part of the PMIC (Power Management IC) family of voltage regulators. This controller is a DC-DC (Direct Current-Direct Current) switching controller that is specially designed for use in power management applications. In particular, it is commonly used in applications such as cell phones, PDAs, mobile audio, battery-powered applications, and digital audio players.

The LTC1142CG#TRPBF is a single-channel controller that is capable of controlling a wide range of voltage regulator types, including switching buck, boost, flyback, buck-boost, and charge pump converters. It has an integrated low-resistance synchronous rectifier that allows for efficiency and power savings. It is also capable of operating over an extended temperature range of -40°C to +85°C. The device is configured with an on-chip oscillator that allows it to be synchronized to an external clock and to support both fixed and dynamic frequency modes.

The LTC1142CG#TRPBF has a wide range of features and settings, allowing it to be customized for applications that require specific performance. It has an adjustable error amplifier, a wide input voltage range, adjustable soft-start, adjustable overcurrent protection and adjustable overvoltage protection. Additionally, it has an adjustable current sense and an adjustable voltage sense. It also has a selectable pulse-by-pulse voltage and current limit, as well as an automatic shut down feature and a restart delay.

Working Principle

The LTC1142CG#TRPBF voltage regulator controller works by providing a regulated output voltage through its control loop. This control loop consists of four elements: the input voltage source, the oscillator, the error amplifier, and the output control switch. The oscillator generates pulses, which are used to generate a closed loop control system that regulates the output voltage of the controller.

When the input voltage is applied, the oscillator produces a pulse, which is sent to the error amplifier. The error amplifier compares this pulse to a voltage reference, which is programmable. If the voltage reference is higher than the voltage of the input, it will send a signal to the output control switch to increase the output voltage, and if the voltage reference is lower than the voltage of the input, it will send a signal to the output control switch to decrease the output voltage. This adjustment continues in a loop until the output voltage is stabilized at the desired level.

Conclusion

The LTC1142CG#TRPBF voltage regulator controller is a single-channel DC-DC switching controller designed for use in power management applications, such as cell phones, PDAs, and digital audio players. It has a wide range of features and settings, and is capable of controlling a wide range of voltage regulator types. It is also capable of operating over an extended temperature range, and is configured with an on-chip oscillator that allows it to be synchronized to an external clock and to support both fixed and dynamic frequency modes. The LTC1142CG#TRPBF works by providing a regulated output voltage through its control loop, which consists of the input voltage source, the oscillator, the error amplifier, and the output control switch.