L6728DTR

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The L6728DTR is a high-efficiency, low-quiescent current DC-DC synchronous switching controller. It is suitable for a variety of power management applications, including Li-Ion/Polymer battery-powered applications, as well as low power adapters. It is designed for step-down and step-up voltage converters, ideal for portable applications. It integrates a dedicated low-side driver, allowing the device to handle large capacitive and inductive loads.

The device operates from input voltages of 5.5V to 18V. It is capable of an output voltage range of 5.5V to 28V depending on the input voltage. The maximum output current is 3A and it offers constant frequency, current mode control during all operations. It offers programmable switching frequency up to 1.2MHz for optimized performance for applications such as laptops, portable audio players, cell phones, and digital cameras. The minimum off-time of the device is just 0.3uS, while the maximum off-time is 18uS, allowing it to be used to accurately control the charging and discharging of a Li-ion/Polymer battery. The device also offers a very low quiescent current, at just 4uA in either shutdown or run mode.

The L6728DTR\'s main features include programmable frequency up to 1.2MHz, adjustable dead-time, and constant on-time control. It integrates a dedicated low-side driver, providing high-side/low-side drive isolation, as well as enhanced control of the switching times and switching transients. It also offers a built-in programmable charge pump, allowing the device to operate with very low input and output voltages. The device also monitors the output voltage and current, and provides protection against short circuits and over-voltages. Additionally, the device has low EMI filtering characteristics, providing good EMI performance.

The L6728DTR can be used in a wide range of applications, including Li-Ion/Polymer battery-powered applications, low power adapters, portable audio players, cell phones, digital cameras and other portable applications. It is suitable for synchronous buck/boost converters, flyback converters, forward converters and push-pull converters. It can also be used for variable output current control, allowing designers to optimize system power distribution. Additionally, the small package size of the device makes it an attractive solution for applications requiring small size, high efficiency and low power consumption.

To summarize, the L6728DTR is a DC-DC synchronous switching controller designed for step-down and step-up voltage converters and ideal for portable applications. It offers programmable switching frequency up to 1.2MHz, and programmable charge pump for regulating very low input and output voltages. The device also provides protection against short circuits and over-voltages. It is suitable for Li-Ion/Polymer battery-powered applications, low power adapters, portable audio players, cell phones, digital cameras and other portable applications. It is an attractive solution due to its small package size, low quiescent current, high efficiency and low power consumption.

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