ISL9011IRKJZ

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ISL9011IRKJZ Application Field and Working Principle

ISL9011IRKJZ is a highly integrated power management IC (PMIC) designed for applications such as handheld devices, smartphones, tablets and other consumer electronics. This device is part of the ISL9011 product family, which is a series of voltage regulators. The voltage regulator works by taking the input voltage and regulating it to a desired output voltage. The ISL9011IRKJZ is a linear type voltage regulator that has wide range of input voltages (1.8V to 5V), and provides up to 1A of output current.

Features

ISL9011IRKJZ device offers a wide range of features including:

• Input voltage range from 1.8V to 5V, which is ideal for low-voltage applications.
• Output current up to 1A.
• Low quiescent current of 11μA.
• High efficiency with output ripple of 1.0mV.
• Maximum output frequency of 2MHz.
• Compact and small size package of only 1.27mm x 0.90mm.
• Capable of working with high ESR and ceramic output capacitors.
• Thermal protection to ensure device reliability.
• Internal soft-start for reduced inrush current.

Application

ISL9011IRKJZ PMICs are widely used in mobile phones, tablets, portable media players, and other consumer electronics applications, where energy efficiency and compact size are key design considerations. ISL9011IRKJZ can be used to provide regulated power to various components of the system, such as the CPU, memory, display, audio, and other peripherals. Additionally, the device is capable of providing a very low quiescent current, making it ideal for applications that require long battery life.

Working Principle

The working principle of a linear voltage regulator is to keep the output voltage fixed regardless of the input voltage and load variations. In the case of the ISL9011IRKJZ, the fixed output voltage is set by the external resistors. When the input voltage is greater than the output voltage, the device acts as an active pass element, meaning it will draw current from the input voltage and pass it to the output. When the input voltage drops below the output voltage, the device acts as an active current limit element, meaning it will allow current to flow from the output back to the input to maintain the output voltage.

The regulator also contains an internal voltage reference and error amplifier to monitor the output voltage and adjust the device’s internal control loop appropriately. The error amplifier compares the output voltage to the voltage reference, and adjusts the control loop if the output voltage is not within the desired range. The control loop then adjusts the current flowing thru the pass device accordingly, and the output voltage is returned to the desired value.

Conclusion

ISL9011IRKJZ is a highly integrated PMIC designed for handheld devices, smartphones, tablets, and other consumer electronics. This device is part of the ISL9011 product family and is a linear type voltage regulator that has wide range of input voltages (1.8V to 5V), and provides up to 1A of output current. This device offers low quiescent current, high efficiency, and thermal protection. Additionally, it is capable of working with high ESR and ceramic output capacitors. This device can be used to provide regulated power to various components of the system, and is ideal for applications that require long battery life.

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