ISL6244CR

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ISL6244CR is a high performance, low-voltage synchronized buck controller with integrated MOSFETs. It offers a very efficient, low-loss, space-saving DC/DC control solution for a wide range of applications. This device features an adjustable switching frequency and output current limit, adjustable undervoltage lockout, adjustable soft-start for low-power start-up, as well as an integrated synchronizing circuit for operation in parallel mode. Its very low quiescent current and wide input voltage range make it ideal for many low-power applications.

Application Field

The ISL6244CR is suitable for a wide range of applications. For example, it can be used in telecommunication systems and networks, automotive, industrial and consumer electronic products, and medical equipment. It is also suitable for battery-powered data, telecommunication, cellular, and wireless communication systems as it can provide reliable power supply with very low quiescent current.

Working Principle

The ISL6244CR works by providing a single regulated voltage output from a single or multiple regulated power supplies. When an input voltage from multiple sources is detected, the controller turns the switch on and off at a fixed switching frequency, regulating the input voltage to the set regulator output voltage. The main advantage of this device is its ability to provide very low quiescent current and its extremely low dropout voltage, which enables it to be used in very low-power systems. It also features an adjustable switching frequency, adjustable under-voltage lockout and adjustable soft-start for low-power start-up operations.

The device consists of two internals MOSFETs and an integrated synchronizing circuit. The two MOSFETs drive the power switch in order to provide the regulated voltage output. The synchronizing circuit synchronizes the two MOSFET switching frequency so that the output voltage can be regulated. The output voltage is also adjustable via an external resistor, allowing the user to adjust the regulator output voltage according to application requirements.

Additionally, the device features an adjustable soft-start circuit allowing the device to start up with a low-power consumption. This is especially important for low-power applications when low start-up power consumption is required. Moreover, the device features an overvoltage protection, undervoltage protection, short-circuit protection, and over-temperature protection for added reliability.

Overall, the ISL6244CR is a very efficient, low-loss DC/DC controller that provides a reliable, space-saving solution for many low-power and low-voltage applications. Its low quiescent current, integrated MOSFETs and wide input voltage range make it suitable for use in many low-power applications. By using this device, users can easily and reliably power their applications with a regulated, low-cost and efficient solution.

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