TL7702AID

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PMIC - Supervisors (also known as PMIC Supervisors or SupervisorICs) provide microcontroller systems with the power and control they need to ensure reliable and accurate operation. The TL7702AID is a Versatile Low Voltage Supervisory Circuits from Texas Instruments. This IC and its associated components allow for user-defined power-on reset and detection of an out-of-tolerance battery voltage, and low power for run-time monitoring of a power-supply rail.

The TL7702AID is designed for microcontroller-based systems with a wide input voltage supply range, from 2.7V to 11V, and a broad range of reset thresholds from 1.8V up to 5.5V. This wide adjustability allows the user to customize their system to the exact voltage and reset voltage they need. It features fast startup times and low power consumption, letting the user customize the timing performance and power of their system. The low supply current is adjustable, allowing users to minimize the power draw of their system, saving them valuable board space.

The TL7702AID often replaces battery backed-up systems and combined monitoring and control circuits. Battery backed-up systems, for example, are often used in low-power systems to provide reliable reset signals and power when required. The TL7702AID\'s adjustable OVP alert, combined with its low-supply monitoring, allows users to monitor and protect their system from out-of-tolerance voltages. Furthermore, the TL7702AID\'s voltage detector feature, with its low-power operation, allows the user to monitor their system power at run-time with minimal board area and power usage.

The TL7702AID offers the user flexibility in setting the reset and detection threshold. Users can select the level of their system\'s power on reset by adjusting the reset and detection threshold with a single capacitor, depending on their system\'s requirements. The TL7702AID also offers a choice of reset timing options, with a maximum reset period of 210ms and a minimum reset period of 2μs. This flexibility allows the user to tailor their system\'s power and reset behaviour to their particular application.

In addition, the TL7702AID integrates two output options - push-pull or open-drain. The push-pull option lets the user configure their system to produce a high-active reset or a low-active reset signal. This allows users to define the reset behaviour of their system without needing to use an extra transistor. The open-drain option is more common when used to reset microcontrollers, due to its active low-active reset signal.

The TL7702AID also includes additional features built into its functionality. An on-chip precision voltage reference eliminates variation across temperature, reducing the effect of temperature changes on the monitoring system. Its low-battery monitoring feature guards against accidental brown-outs and provides reset signals when needed. This prevents unexpected behavior when a low-battery condition occurs. The TL7702AID also features a Power Good flag to monitor system voltage levels and provide an accurate indication when the supply voltage is within tolerance.

In conclusion, the TL7702AID\'s broad range of user-defined reset and detection thresholds, fast reset times, low power consumption, and adjustable OVP alert make it an ideal choice for monitoring and controlling microcontroller-based systems. It provides users with the flexibility to customize their system\'s power and reset behavior to suit their specific application. The TL7702AID\'s integrated on-chip voltage reference eliminates variation across temperature and helps to ensure the accuracy of the monitoring system. Its low-battery monitoring feature allows for reliable reset signals when necessary. Combined with its power good flag, the TL7702AID provides reliable and accurate system voltage monitoring.

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