TPS3803-01QDCKREP

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The TPS3803-01QDCKREP is a precision threshold supervisor that provides reset, interrupt and supply monitoring functions. It offers excellent accuracy and hysteresis programmability, as well as its push button reset functionality. This article describes the application field and working principle of the TPS3803-01QDCKREP supervisor.

The TPS3803-01QDCKREP can be used in a wide range of applications such as consumer, automotive, industrial and medical electronics. It is designed to monitor power supply rails from 3V to 3.6V, providing under-voltage, overvoltage as well as power loss/brown-out functions. The device offers several options for resetting a system. Reset outputs can be triggered based on one preset threshold voltage or two preset threshold voltages (dual threshold). The threshold voltages are programmable with small external resistors. The TPS3803-01QDCKREP also offers low voltage detection which can be used to trigger interrupt functions, such as setting a system into low power mode.

The working principle of the TPS3803-01QDCKREP is quite simple. The device has two voltage selection pins (PIN1 and PIN2) which are connected to external resistors to set the threshold voltages. It also has two supply pins (VDD and GND), as well as two reset pins (RESET and RSTB). The device monitors the voltage applied to the two voltage selection pins and will assert a reset signal when the voltage falls below or rises above the respective threshold. It will also assert a reset signal if either of the supply pins (VDD or GND) is absent. The RSTB pin is a push button reset signal.

The TPS3803-01QDCKREP is equipped with a number of additional features. It includes a power-on reset signal (POR) that is output as soon as the device is powered on. It also provides an open direct input (ODI) signal, which can be used to detect open drains and other faults. Additionally, it features an external reset enable (REN) input, which allows an additional logic to control the reset signals. The TPS3803-01QDCKREP also provides a serial peripheral interface (SPI) port, which can be used to read back the current voltage and temperature settings, as well as the status of the device.

The TPS3803-01QDCKREP provides a versatile and reliable solution for system monitoring and resetting. It is suitable for a wide range of applications and offers advanced features such as programmable thresholds and dual-threshold monitoring, as well as supply monitoring and open-drain detection. Additionally, its push-button reset functionality and SPI interface provide further flexibility and control for system designers.

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