RT6239ALGQUF

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The RT6239ALGQUF from Richtek is a PWM buck converter with all the necessary control, protection and switching elements to build constant voltage power converters. It is part of a series of highly advanced DC-DC switching voltage regulators available from Richtek’s Power Management portfolio, which specialize in providing high efficiency and fast transient output regulation. This chip is designed to operate in synchronous buck topologies to help manage the power consumption of next-generation low power systems and help reduce their system cost. As part of Richtek’s PMIC portfolio, the RT6239ALGQUF is an ideal voltage regulator for applications such as PCs, notebooks, tablets, cell phones, active-matrix OLED (AMOLED) displays, set-top boxes, Ethernet switches and more that require a DC-DC converter.

The RT6239ALGQUF is an improved version of Richtek’s RT6239 series, which features two additional features for higher level of protection and increased power delivery performance. These features include a power OK (POK) output and pulse-skipping mode. Both features serve to extend the protection performance and power loading capabilities of the device.

The RT6239ALGQUF features two voltage feedback inputs that can be used for monitoring the source and sink voltages. It has robust protection features, including over-current protection, over-temperature protection, over-voltage protection, under-voltage protection, over-voltage/under-voltage monitoring, and short-circuit protection. The device also comes with a soft-start function to minimize the output voltage surge.

The RT6239ALGQUF is programmed and configured using the serial peripheral interface (SPI). The onboard voltages are programmed with a 10-bit effective resolution data providing a better stability. The output voltage is easily programmed using the onboard register. The device can operate over a wide input voltage range of 4.5 V to 19 V and generate an output voltage as low as 0.8 V. It\'s capable of providing up to 3 A of current with a maximum output power of 27 W and a switching frequency of up to 1 MHz.

The RT6239ALGQUF has a low standby current of less than 25 uA and a high efficiency of up to 88% with a minimum on resistance of just 70 mΩ. Its low quiescent current makes it ideal for portable applications that are powered by battery. The device also has standby control that allows the outputs to be connected or disconnected to the inputs while keeping the device in the same operating state.

In summary, the RT6239ALGQUF from Richtek is a highly efficient DC-DC switching voltage regulator with advanced features for improved protection and power delivery performance. It can be used in a wide range of applications, such as PCs, notebooks, tablets, cell phones, active-matrix OLED displays, set-top boxes, Ethernet switches, and more. It is ideal for low power systems that require a high efficiency and fast transient output regulation.

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