CAT1640LI-28-G

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PMIC or Power Management Integrated Circuits are an essential component of electronic devices. They help regulate power and process control signals, ensuring that power is provided to the components of a device as needed. The CAT1640LI-28-G is an example of this type of integrated circuit. It is used to provide power supervision in multiple supply systems and is specifically tailored for use in wireless applications.

The CAT1640LI-28-G is an ideal choice for providing voltage monitoring and system reset in Li-Ion powered handheld devices. This IC features a low operating current of only 1.4 μA, allowing for improved battery life. It is available in the SOIC-8 and TDFN packages, making it suitable for space-constrained applications such as PDAs, smart phones and Bluetooth headsets. With a reset timeout of 10 ms, this IC provides quick system reset during start-up, ensuring reliable operation.

The CAT1640LI-28-G provides adjustable power-on reset (POR) thresholds and a wide operating voltage range of 2.3 V to 5.5 V. This IC can be configured for active-low or active-high open-drain POR output, making it compatible with all types of microcontrollers. This IC supports two separate power supplies, making it suitable for dual power supply applications. The thermal shutdown and overvoltage lockout features further ensure reliable operation.

The CAT1640LI-28-G features an integrated voltage regulator with a typical dropout voltage of 115 mV, making it suitable for applications requiring low-dropout regulators. This means that the power supply current is regulated to the desired level, allowing for improved efficiency and lower battery drain. The voltage monitoring circuit in the CAT1640LI-28-G provides factory-trimmable thresholds, ensuring accurate detection of overvoltage and undervoltage conditions.

The CAT1640LI-28-G is designed to provide system reset when the supply voltage falls below a certain threshold. This is done by detecting an overvoltage or undervoltage condition and then asserting or deasserting the reset signal. This feature prevents ICs and circuits from damage caused by sudden and extreme voltage fluctuations. The reset signal stays asserted for 10 ms and then automatically deasserts, allowing for quick system reset.

The CAT1640LI-28-G is a versatile IC that is suitable for use in a wide range of applications. It is ideal for use in Li-Ion powered handheld devices such as PDAs, smart phones and Bluetooth headsets. It is also ideal for any application requiring low-dropout voltage regulators, voltage monitoring, and system reset circuitry. With its low operating current, adjustable POR thresholds and 10 ms reset timeout, this IC can provide reliable power and performance for any application.

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