IPS5451

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Power distribution switches and load drivers are essential components when it comes to the application of power management products. They are used to efficiently transport energy between different levels of the power system hierarchy. At the lowest level, the main power distribution switches regulate the power supply to individual devices, while the higher level, the secondary load drivers, provide precise control over the routing and operation of each device.

The IPS5451 device is a dual-output 3.3V/1A, 1A/3.3V, power switch featuring one primary/secondary switch and two, individually controlled current limit settings. The device operates with a 1.8V to 5.5V power supply, and features low standby current of 2.5μA. On the primary/secondary side, the device includes protection features such as over-voltage protection, open load detection, reverse current detection, over temperature protection, under voltage lockout, and current limit.

The IPS5451 is designed to provide efficient power conversion from the main power distribution switch to the secondary load drivers. It has a wide output voltage range, adjustable through separate reference pins. Using an internal voltage reference and current regulator, it can be used to set the output voltage between 1.8V and 5.5V. The device also has an adjustable current limit feature which can be set through two external resistors. The current-limit feature is designed to prevent the power switch from exceeding a predetermined current value.

The IPS5451’s output can be in both primary and secondary modes. In the primary mode, the device controls the voltage output to the load, while in the secondary mode, the current is limited to a precision value by the device itself. The device also features an adjustable slew rate control which offers reliable current delivery and improved performance at light loads. This feature is beneficial in applications such as power supply systems, back-up system, regulated voltage converters, and memory power supplies.

The IPS5451 is well-suited for applications that require accurate current sensing and precision control over the output voltage. It is also suitable for powering small electronic systems like embedded microprocessors and digital media players. Its small size and low power usage make it an effective choice for a wide range of power management applications.

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