ISL9005AIRBZ-T

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The ISL 9005AIRBZ-T is a low drop adjustable linear regulator from Intersil with extended operating input range of 2.2V to 18V. It is designed to generate a regulated output voltage from a wide range of input voltage with very low output voltage ripple. Its low dropout voltage makes it suitable for applications where low power dissipation is critical. It features low ground current even at full load current. This makes it an ideal choice for automotive applications which require a wide input voltage range and high starting value of input voltage.

The ISL 9005AIRBZ-T voltage regulator consists of an internal voltage reference, error amplifier, internal PMOS transistor and protection circuits. Its output voltage is set by a resistor divider. The output voltage is determined by the value of the two resistors R1 and R2 connected to the regulator. The voltage reference generates a constant voltage proportional to the resistor divider, regardless of the output voltage changes. This voltage reference then feeds the voltage to the input of the error amplifier and compares it against the regulated voltage at the output of the error amplifier. When the regulated voltage is different from the reference, the error amplifier generates an output signal which then drives the NMOS pass transistor.

The output of the ISL 9005AIRBZ-T voltage regulator is protected with various protection circuits such as over-temperature protection, over current protection, overvoltage and undervoltage protection. These protection circuits help to provide a stable and reliable operation even under extreme environmental conditions.

In summary, the ISL 9005AIRBZ-T is a low drop adjustable linear regulator from Intersil with extended operating input range of 2.2V to 18V. It features low ground current and excellent power supply ripple and noise rejection. The device offers a high degree of output voltage accuracy and high PSRR. It also integrates various protection circuits for further stability and reliability in applications where low power dissipation is critical.

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