TL7712ACD

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The TL7712ACD is a highly integrated supervisor device designed to monitor system voltage, provide low-power consumption, and provide accurate reset timing control. It is categorized as a PMIC - Supervisors, meaning it includes both power management and a form of control logic. The device features a voltage monitor, reset timer, and precision voltage reference. The closely-related TL7712A and TL7712AC have the same features/applications as the TL7712ACD, with the main difference being that the D version comes in a SOIC-8 package.

TL7712ACD is designed to monitor system voltage, provide timely protection from under voltage and over voltage, and support independent manual reset operations. It enables Early Warning (EW) and Force-On (FO) operations when the system voltage drops below the pre-set voltage threshold. This makes the device ideal for applications where voltage monitoring and protection is required. Further, the device is capable of driving a small MOSFET to provide over-current protection.

Under normal conditions, the TL7712ACD operates in active mode, consuming only 8 µA of current. This allows it to be integrated into low-power, battery-operated systems with minimal effect on performance or battery life. At the same time, it provides accuracy and repeatability through its precise voltage references. Moreover, the device features an adjustable Brown-Out (BO) threshold, allowing flexibility in setting the minimum voltage level at which the power supply must operate.

The TL7712ACD also has a Reset Timer which provides an accurate timing for automatic restart after power-on reset. This timer can be used to produce a reset pulse from every power-on reset, meaning it also doubles as a supervisor circuit. Lastly, the device provides an independent manual reset function, allowing manual override of the system or reset of the processor when necessary.

In terms of application fields, the TL7712ACD is an ideal solution for applications such as embedded industrial controllers, senors, consumer electronics, computing systems, system-on-chips (SoCs) and power supplies. Combining both active and standby power modes, the device is capable of protecting a system from both undervoltage and overvoltage conditions. It also provides protection from short circuits, making it a particularly convenient solution for applications requiring reliable protection from potential system damages.

The TL7712ACD works on the principle of detecting a deviation from the VDD voltage and pulling the reset pin low. In active mode, the voltage monitors each time the VDD voltage drops below a pre-set voltage threshold (BO threshold). When the BO threshold is exceeded, the reset pin is activated and the internal timer starts counting. Depending on the value of the Timer, the reset can be forced or suspended. In standby mode, the device monitors the VDD voltage, and if the VDD voltage rises above the BO threshold, the reset pin is still active and the Timer resets to its initial value.

In conclusion, the TL7712ACD is a highly integrated supervisor device that provides voltage monitoring, precision voltage referencing, a reset timer and independent manual reset operations. It is ideal for applications that require voltage monitoring and protection, and consumes only 8 µA of current in active mode. With its ability to provide accurate reset timing control and protection from overvoltage and undervoltage situations, the TL7712ACD is a perfect solution for embedded industrial controllers, sensors, consumer electronics, computing systems, SoCs, and power supplies.

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