TLC7703QPG4

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In the world of power management integrated circuits (PMICs) components, the TLC7703QPG4 integrated circuit is used in a wide range of applications. As a member of the Texas Instruments Supervisors portfolio, the TLC7703QPG4 helps provide system protection, reliability and safe operation.The TLC7703QPG4 is a high performance, cost effective watch dog timer (WDT) supervisor IC. It is designed for a variety of application requirements in industrial and automotive/off-road markets. It helps protect embedded processors from system failure due to software or hardware faults, or from unexpected power cycles. This highly integrated solution provides system protection in a space and cost effective solution packaged in a 10-pin QFN (2.6 mm x 3.5 mm) package without needing a crystal oscillator or external components.What makes the TLC7703QPG4 pmic supervisor special is the fact that it is a programmable WDT supervising solution. The TLC7703QPG4 employs a versatile approach to WDT supervision which enables power and system designers to adapt the IC’s operation to their application requirements. The device also incorporates a system reset processor with separately programmable power-on reset (POR) and WDT reset (WDR) period lengths. Additional features include Under-Voltage Lockout (UVLO), Brown-Out Detector (BOD), two system reset outputs, an active low enable input, open-drain user detect output options and temperature sensor.On a deeper level, the working principle of the TLC7703QPG4 is based on a simple yet highly effective approach. At the core of its operation is the concept of a "watch dog timer" or "watchdog". The watchdog is responsible for overseeing the system and taking action when certain set thresholds have been crossed. It does this by monitoring various system parameters such as power supply voltages, temperature levels and load current. If any of these parameters are out of range or operating outside of specified limits, the watchdog will initiate the appropriate reset sequence to the processor and other components.The TLC7703QPG4 also has built in fail-safe protocol for system reset. This protocol will initiate a reset if the output response of the watchdog system remains out-of-spec for a predetermined amount of time. This ensures system stability and helps prevent catastrophic system failure.The TLC7703QPG4 solution is ideal for a wide range of industrial, automotive and off-road applications that require strict reliability and high levels of system protection. It is a low power and cost effective solution that provides system security, stability and robust system resets. Its versatile architecture and high integration makes it the perfect solution for system designers when high reliability and safety are key design requirements.

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