LTC2908CTS8-C1#TRPBF

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Power Management IC (PMIC) regulators are critical components in electronics and are used to help regulate and direct the power supply of a device. A PMIC typically contains multiple regulators, multiplexers, and switches to route signal paths efficiently and regulate power. Different PMICs exist to address specific types of power regulation, such as low-power linear, high performance switching, and Supervisors. The LTC2908CTS8-C1#TRPBF belongs to this family of PMIC-Supervisors, and is an important part of the circuit, both in application and operation.

PMIC-Supervisors are intelligent circuits that monitor and analyze power electronics and protect them against overvoltage and undervoltage. This type of PMIC is typically used in applications where safety is a major factor, such as in embedded systems, industrial and medical equipment, and airplane instrumentation.

The LTC2908CTS8-C1#TRPBF is a PMIC-Supervisor designed to protect sensitive devices from overvoltage, undervoltage, and ESD damage. It features a monolithic precision voltage detector that integrates an undervoltage lockout (UVLO) circuit, overvoltage lockout (OVLO) circuit, and ESD protection circuit all in one device.

The LTC2908CTS8-C1#TRPBF is specifically designed to protect applications operating on a single-cell main supply. It combines a wide range of user-settable voltage settings and a latch and restart feature with a built-in precision voltage detector and three levels of ESD cell protection. The result is improved system reliability, robust protection in high noise environments, and protection from ESD attacks.

The LTC2908CTS8-C1#TRPBF is an n-channel MOSFET supervisors and is designed to be used in battery powered systems, where a continuous supervision of the battery voltage is required. The supervisor monitors the voltage of the battery and responds in three different ways: i) if the voltage decreases, the output stays off and prevents a low battery disconnect; ii) if the voltage exceeds the upper threshold, the device automatically shuts down the battery supply; and iii) if the voltage goes below the lower threshold, it will reset the system.

The supervisor\'s operation is based on on-chip, hysteretic comparators, which detect two user-programmable thresholds. The comparator thresholds are digital controlled by one chip enable line and two voltage setting pins. The threshold voltages are set by applying external reference voltages at the VTH and VTL pins. Internal circuitry ensures that the device does not enter an unstable condition, and does not reset if the voltage fluctuates from one side of the threshold to the other, referred to as hysteresis.

The LTC2908CTS8-C1#TRPBF supervisor comes with a latch-restart feature, which will latch off the device until the battery voltage returns to normal and the reset pin is asserted. This feature is very useful in applications where the battery voltage must not exceed certain limits to prevent damage to the battery or system. This feature is also useful in applications that require an undervoltage lockout, since the device can be configured to shut off the battery supply if the voltage goes below the user-set lower threshold.

The LTC2908CTS8-C1#TRPBF supervisor is highly reliable, offering an operating temperature range of -40°C to 125°C and up to 8.2 kV HBM ESD protection. It is available in a Pb-free and RoHS compliant 8-pin VSSOP package and is ideal for use in applications where size and power management are crucial.

In summary, the LTC2908CTS8-C1#TRPBF PMIC-Supervisor is an ideal solution for protecting embedded systems, industrial and medical equipment, and airplane instrumentation from overvoltage, undervoltage, and ESD damage. It has programmable voltage thresholds, latch-restart feature and up to 8.2 kV HBM ESD protection, making it an efficient and highly reliable solution for these applications.

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