L6928D

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L6928D Application Field and Working Principle

The L6928D switching regulator is a linear-on-demand DC-DC converter controller. It offers improved efficiencies and higher performance compared to the industry standard linear regulators, thus reducing power losses and extending battery life. It is suitable for a variety of applications, such as cellular phones, digital cameras, personal computers and GPS systems.

Applications

The L6928D switching regulator is ideal for a wide range of applications, including:

• Cellular phones
• Digital cameras
• Personal computers
• GPS systems
• Portable electronic equipment
• DTVs, DABs, video games and power adapters
• IT equipment

The L6928D switching regulator is designed to offer improved efficiencies and higher performance compared to the industry standard linear regulators. It is highly efficient, with an adjustable operating voltage range of 2.7 to 19V and an adjustable output current of 0.8 to 2.6A. The device also includes a low-dropout (LDO) regulator, which can be used to reduce input voltage noise.

Features

• High efficiency linear-on-demand DC-DC converter controller
• Adjustable operating voltage range of 2.7 - 19V
• Adjustable output current of 0.8 - 2.6A
• Built-in power consumption reduction feature
• Built-in over-temperature protection
• Built-in low dropout voltage regulator (LDO)
• Low input voltage noise
• Low-heat dissipating design
• High ripple rejection

Working Principle

The L6928D switching regulator works by controlling the magnitude and direction of a variable input voltage, regulating the output voltage and providing a regulated output current. The controller utilizes frequency control to regulate the output voltage or current to the desired setpoint. The controller produces a variable frequency output with high efficiency and low power consumption.

The L6928D switching regulator features an on-demand mode of operation, which uses a voltage control loop to keep the output voltage at the desired setpoint. The controller automatically detects the load and adjusts the pulse width modulation (PWM) duty cycle to maintain the setpoint. It also features a low-dropout regulator, which reduces input voltage noise.

The L6928D also includes a built-in power-saving feature. This feature allows the controller to reduce the operating frequency when the output is under light load. The reduced operating frequency reduces power consumption and extends the battery life of the system.

The L6928D switching regulator is a highly efficient, high-performance device, which offers improved performance and extended battery life compared to traditional linear regulators. The device is suitable for a variety of applications, including cellular phones, digital cameras, personal computers, and GPS systems.

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