LX8386B-33CDD

LX8386B-33CDD Application Field and Working Principle

The LX8386B-33CDD from LXZY is a monolithic, low dropout (LDO) linear voltage regulator designed for space-constrained applications. The device offers a wide range of features such as an ultra-low-dropout voltage, fast transient response, low power dissipation, and programmable current limit and thermal shutdown for improved reliability. Additionally, the LX8386B-33CDD features an adjustable output voltage range of 1.2V to 5.0V, a dropout voltage of 0.9V at 1A, and a quiescent current of 0.2mA.

Features

• Ultra-Low Dropout Voltage
• Ultra-Low Quiescent Current (0.2mA)
• Current limit and Thermal Shutdown
• Wide Input Voltage Range (1.8V to 6.0V)
• Wide Output Voltage Range (1.2V to 5.0V)
• Fast Transient Response
• Low Power Dissipation

Applications

• Smartphones and Tablets
• Notebook PCs and Ultrabooks
• Netbooks and Mobile Internet Devices (MIDs)
• Personal Digital Assistants (PDAs)
• Digital Cameras and Video Cameras
• GPS Systems and Portable Media Players (PMPs)

Working Principle

The LX8386B-33CDD is a monolithic linear voltage regulator that supplies an adjustable output voltage between 1.2V to 5.0V. It employs the principle of output voltage regulation by dissipating the excess input voltage in the form of heat to maintain a constant output. The LM8386B-33CDD’s low dropout voltage of 0.9V enables it to maintain good regulation even with a relatively low input to output voltage differential.

The LX8386B-33CDD features an adjustable current limit and thermal shutdown for improved reliability. The current limits operation by providing a low duty cycle PWM signal in order to control the output current. The thermal shutdown circuit shuts down the device when the die temperature exceeds a certain threshold, thus preventing device damage due to excessive temperature.

The LX8386B-33CDD is an ideal choice for space-constrained applications, such as smartphones and tablets, notebooks PC, and ultrabooks. The device’s ultra-low-dropout voltage and ultra-low quiescent current make it an attractive power management solution for battery-powered devices.