ISL9011IRPLZ-T

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The ISL9011IRPLZ-T is a voltage regulator, designed to provide a regulated output voltage using a linear current supply. This device is part of the PMIC (Power Management Integrated Circuits) family and provides a low input voltage design to regulate the output voltage independent of the input voltage. The device operates with an input voltage of 1V to 4.5V and up to 500mA, and can provide an output voltage all the way up to 3V. The output voltage is adjustable by means of an external control voltage.

The ISL9011IRPLZ-T is designed to be a drop-in replacement for a discrete linear regulator, but with a much higher efficiency and current capability. This device requires only two external components, such as a capacitor and a feedback resistor, and the internal architecture of the IC provides a temperature compensation and temperature spike protection, to avoid achieving sustained fault conditions, in a very cost-effective and space saving solution.

The IC is provided in a Pb-free 8-pin IC, in the SOIC-8 package, able to withstand up to 10V of voltage in reverse direction. The IC includes two power MOSFETs, an opto-coupler, a Hall effect current sensor, a temperature sensor, and a current-regulating and voltage-regulating circuit. Regarding the temperature sensor, this is a device that is used to detect and measure temperature, and the data is used by the other components for proper operation of the IC.

The current regulation based on the Hall effect current sensor is implemented when the voltage with the temperature compensation climbs above the reference voltage set by the control line. Once the regulation is activated, the output voltage is maintained in a relatively stable manner. The voltage regulation is based around an opto-coupler, where the output voltage is maintained at the level set by the control line. Both the output voltage and current can be adjusted with the control terminal.

The ISL9011IRPLZ-T voltage regulator is particularly useful for applications where space is a major constraint, such as in board‑mounted equipment, portable digital devices and smart solutions such as IoT, wearable, and medical applications. This device is also useful for automotive applications, due to its low input voltage and high output current capabilities.

In conclusion, the ISL9011IRPLZ-T is an integrated linear voltage regulator with a low input voltage limitation and high output current capacity. This device is typically used for applications in the mobile device, automotive, and smart solutions space, due to its compact size and high efficiency. It requires minimal external components and provides temperature protection measures, making it a great choice for space-constrained, cost-effective and reliable solutions.

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