ISL6421ERZ

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The ISL6421ERZ is a special purpose voltage regulator that serves as a precision power source for applications such as analog-to-digital converters, microprocessors, and analog circuits. It is designed to provide a programmable output voltage with very low output voltage deviation over a wide input voltage range and over a wide temperature range, allowing for reliable operation in industrial, automotive, and other power systems.

The ISL6421ERZ is a low drop-out three-terminal linear regulator that converts an input voltage between 6V and 45V to a precisely regulated output voltage of 1.19V to 6V. It requires an input-output voltage differential of only 300mV at full rated load current, making it suitable for powering noisy systems and high-precision analog circuits. The regulator is offered in an internally compensated current-limiting and thermal-overload protection configuration, making it ideal for applications where reliability and fault tolerance are a must.

The device’s regulation is based on an internal bandgap reference and involves a comparator, an error amplifier, and an external resistor/capacitor network. The ISL6421ERZ features low output voltage tolerance of 0.25%, low quiescent current of 230uA, and output current of 1A. The device is also capable of protecting itself against short-circuits and overtemperature. Other features include a fast line/load transient response and the ability to accurately regulate to less than 1.2V. The device also offers a programmable power-on reset timeout delay.

The ISL6421ERZ is available in a space-saving 6-lead USO/TFBGA package and offers a wide operating temperature range of -40°C to +125°C. The device is ideal for design applications that require high precision output voltage over varying conditions such as high input voltage, temperature, and noise. It is suitable for industrial, automotive, small appliance, and other power systems requiring low dropout precision regulation.

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