ISL9000IRLLZ-T

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The ISL9000IRLLZ-T is a simple, low-cost, three-terminal linear voltage regulator (MIL-PRF-19500/547). It works by controlling output voltage with a pass-through current limiting approach. The ISL9000IRLLZ-T has an extremely low quiescent current and can be used for both positive and negative applications.

The ISL9000IRLLZ-T is ideal for a wide range of applications, including telecommunications, power supplies, point-of-load regulators, battery-powered systems, and high-voltage applications. Because of its low quiescent current (less than 1mA), it is well suited to applications where the system power consumption must be minimized.

The ISL9000IRLLZ-T has a wide input voltage range of 2.7V to 12V and can accurately deliver an output voltage of up to ±2V with a load current of 10mA. Its maximum output current is 500mA and it comes with capping protection for over current and low voltage protection for over voltage protection. It also has input surge protection and reverse protection for both input and output.

The ISL9000IRLLZ-T is an ideal solution for precision voltage control with current limiting, as it can be used to replace discrete components as well as a complete set of parts for a linear regulator. The device uses an on chip bandgap reference and a power transistor to provide a fixed output voltage with a guaranteed temperature coefficient of less than 0.1%. This ensures that the output voltage will not change over time or operating conditions.

In terms of its working principle, the ISL9000IRLLZ-T uses an internally set precision voltage reference to set a voltage differential between the input and output. The resistor divider network is then used to regulate the output voltage. When the output voltage is greater than the reference voltage, current is limited, or vice versa. This regulation loop is driven by an external resistor/capacitor circuit which sets the power transistor’s gain and protects the regulator from output over-voltage conditions by monitoring the output voltage.

In addition to its voltage source capabilities, the ISL9000IRLLZ-T features short-circuit protection and reverse-current protection, as well as thermal shutdown and over current protection. It also incorporates a low-value shunt resistor which helps to monitor the output voltage and current.

Overall, the ISL9000IRLLZ-T is a simple and low-cost three-terminal linear voltage regulator with an extremely low quiescent current and wide input voltage range. The device has a precisely defined output voltage and is designed for a wide range of applications, including telecommunications, power supplies, point-of-load regulators, and battery-powered systems. It also has current limiting capabilities with low voltage protection, input surge protection and reverse protection.

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