LTC3863EDE#PBF

The LTC3863EDE#PBF is a high-performance, high-efficiency monolithic synchronous DC/DC step-down switching regulator controller. It is a product of Linear Technology, a leader in the switching regulator industry for its high-efficiency, precision, and performance in a variety of applications. The device enables the design of efficient synchronous DC/DC regulation systems. The device has two channels, each capable of driving a synchronous buck regulator circuit. Both channels are identical and share the same features, including a peak current DAC, a voltage feedback reference, and a bandgap reference. This controller offers optimized power efficiency and thermal performance.

The LTC3863EDE#PBF application field can be classified as PMIC - Voltage Regulators - DC DC Switching Controllers. This product can be used in computing platforms, distributed Power systems and dedicated applications such as mobile phones and other portable devices.

This device provides DC/DC regulation for a wide range of applications. The controller can operate in a variety of modes, including step-down, pulse-skipping and low-noise PFM. It also includes a digital architecture, which enables tight control of ripple, system noise, transient response, and slew. The LTC3863EDE#PBF also offers seamless transition between different modes, providing robust performance operation in changing conditions.

The working principle of the LTC3863EDE#PBF switching regulator controller is based on the operation of the switches, which are commonly referred to as the high-side and low-side switches. The low-side switch connects the power supply of the system to the load while the high-side switch connects the load to the output of the regulator. The regulator also contains a voltage feedback reference that is compared to the output voltage of the regulator to provide the information necessary to control the operation of the switches.

The output voltage of the regulator is controlled by connecting the voltage feedback reference to the voltage output pin. The voltage feedback reference can be a potentiometer, a digital logic signal, a DAC, or an opto-coupler. The voltage feedback reference sets the output voltage of the regulator by varying the duty cycle of the high-side switch on the regulator.

In addition to providing control of the output voltage, the LTC3863EDE#PBF also includes other built-in digital features to provide for enhanced performance and system optimization. These features include an adjustable output current limit and an adjustable system power limit. Additionally, the controller includes a peak current digital-to-analog converter (DAC) and a diagnostic flag output that can be used to monitor system current.

The LTC3863EDE#PBF provides users with a controller designed to offer reliable and efficient performance in a variety of applications. Its two identical channels offer enhanced performance by sharing the same features and providing seamless transition between different operating modes. Additionally, the device offers a variety of other built-in features such as a peak current DAC, a voltage feedback reference, and a bandgap reference that allow users to optimize system performance.