ISL9012IRLLZ

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The ISL9012IRLLZ is a linear voltage regulator integrated circuit (IC) intended for low dropout (LDO) voltage regulator applications. It is designed to provide a single output, with an adjustable output voltage range of 1.20V to 3.60V, and an output current of up to 10A. It has an on-chip error amplifier, current limit, thermal shutdown and power-on reset circuitry. The ISL9012IRLLZ is suitable for a wide variety of applications including memory and CPU power supplies, automotive applications, as well as industrial and consumer applications.

Features

• V OUT range: 1.20V to 3.60V
• Low dropout voltage: Typically 180mV at 10A
• Input voltage range: 4.75V to 20V
• Output current: Up to 10A
• On-Chip error amplifier
• Current limit/overload protection
• Thermal protection
• 157kHz switching frequency
• Soft-start operation
• Power-on reset circuitry
• Small 3mmx3mm20-pin QFN package

Applications

• Computer processor and memory power supplies
• Automotive applications
• Industrial and consumer applications
• LED backlighting
• Battery charging

Working Principle of ISL9012IRLLZ

The working principle of the ISL9012IRLLZ is based on a linear voltage regulator. It works by using a transistor to draw a current from the Input voltage, and this current is regulated by a resistor. This resistor has two values, one for the high side and one for the low side. When the output voltage is higher than the desired set point, the transistor draws less current and the voltage is regulated down. When the output voltage is lower than the desired set point, the transistor draws more current and the voltage is regulated up. This method allows the ISL9012IRLLZ to achieve a very low dropout voltage, making it ideal for applications that require a very precise output voltage.

The ISL9012IRLLZ also has built-in features such as current limit, overvoltage protection, undervoltage protection, thermal shutdown, and power-on reset circuitry. The current limit circuitry allows it to protect itself from being overstressed. The overvoltage protection feature prevents the output voltage from becoming too high, and the undervoltage protection feature prevents the output voltage from becoming too low. The thermal shutdown feature prevents the IC from getting too hot, and the power-on reset feature ensures that the IC is in the correct state when it is turned on.

The ISL9012IRLLZ is capable of delivering up to 10A of output current with a very low dropout voltage (typically 180mV at 10A). It is available in a small 3mmx3mm, 20-pin QFN package and is suitable for a wide range of applications including computer processor and memory power supplies, automotive applications, and industrial and consumer applications.

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