TC51N2702ECBTR

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The TC51N2702ECBTR is a reliable and very low-power Supervisory circuit which belongs to the Power Management Integrated Circuit (PMIC) category. It is designed mainly to provide reset signal during power-on, power-off and microcontroller reset and operate in a wide voltage range from 1.2V to 5.5V. This circuit can also act as high accuracy reset thresholds for detecting power supply and brown-out conditions.

The application fields of the TC51N2702ECBTR includes usage in systems with interfaces such as IrDA, LCD controllers, ZigBee, Bluetooth, and MEMS accelerometers. This Supervisory circuit is also found in Li-ion/ LiPo battery powered systems, UBS and PS/2 ports, WiFi and RFID applications, digital picture frames, and data-storage multimedia explorers.

Working Principles of the TC51N2702ECBTR:

• Under normal conditions, the TC51N2702ECBTR maintains the reset output constantly at low state, and the voltage at pin 3 (VCC) should be between 1.3V to 5.5V.
• When the incoming voltage at pin 1 (VIN) exceeds the set threshold (VTH1, which is currently 4.2V or less), then the reset output (RESET) is put at high state.
• When the incoming voltage at pin 1 (VIN) drops below the set threshold (VTH2, which is currently 2.8V or more), then the reset output (RESET) is reset to low state.
• The TC51N2702ECBTR also provides internal pull-ups and pull-downs to ensure reliable reset operation.

The TC51N2702ECBTR Supervisory functions by monitoring both power voltages and power-on reset (POR) conditions. This circuit significantly improves system reliability by avoiding unexpected activations of micro-controllers despite gradual voltage drop. It can also detect brown-out conditions and trigger a reset signal when the power supply is too low.

The advantages of the TC51N2702ECBTR include high operating voltage range, high accuracy reset thresholds and low power consumption which is lower than 50nW. It also features a wide tolerance of temperature and voltage conditions, making the circuit robust enough to withstand normal operating environment.

The TC51N2702ECBTR Supervisory circuit is built in a flexible and efficient way that enables better control and reliable reset times of embedded system designs. This circuit can extend the life and efficiency of the embedded systems by providing a constant reset signal whenever necessary without needing any external components.

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