TPS3514N

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TheTPS3514N is a micropower reset supervisor IC designed to provide the most reliable detection of a power supply failure (PSF) over a wide input voltage range. The device is well-suited for use in mobile and portable applications, and can be used to reset integrated circuits when the power supply is outside normal operating levels. By accurately monitoring the power supply condition, the TPS3514N can provide a reliable mechanism for resetting the system in the event of a power supply failure. In addition, the device is capable of generating highly accurate reset and power good alarm signals below the reset threshold voltage. It can also be used to detect brownout conditions, allowing a loss of power supply voltage across the committed voltage range to be accurately detected.

The TPS3514N is specifically designed for reset and monitoring applications in portable, mobile and other battery-operated systems. The device is optimized for micropower performance, featuring a wide operating voltage range of 3V to 14V, input voltage monitoring accuracy of 0.05V, a wide operating temperature range of -40 to +125C and a typical quiescent operating current of 500µA. The device is capable of driving an open-drain power good output up to 25mA with low deviation from the supply voltage.

The TPS3514N is an active low device, meaning that the reset signal status is active and low when the power supply drops below the reset threshold voltage and deactivates when the voltage returns to normal operating condition. As a result, the reset signal is always opposite from the power supply voltage. The reset signal is automatically active when the power supply is removed and can be used to control the reset signal of a microcontroller or memory device.

The device also provides a power good output that remains active until the power supply falls below an adjustable reset threshold. This ensures that a proper monitoring of the power supply levels is maintained and the system is still actively being monitored at all times. The power good signal is typically used to inform the system that the power supply remains within acceptable parameters, and is active regardless of how long the power supply remains above the reset threshold. Furthermore, the reset active and inactive hysteresis is adjustable, allowing the reliable reset and power good detection of a wide range of supply voltages.

In summary, the TPS3514N is an ideal power supply reset and monitoring supervisor, designed for handheld, mobile and portable applications. In addition to providing reset and power good protection, the device also provides highly accurate monitoring of the input voltage and can be configured to detect brownout conditions. The device features an adjustable reset threshold and reset active and inactive hysteresis, allowing for the reliable detection of power supply faults and brownout conditions in a wide range of applications.

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