CAT8710FTD-GT3

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Power management integrated circuit (PMIC) has been widely used in the electronic industry due to its low cost and reliability. PMICs are mainly used to provide the necessary voltage, current and power to electronic devices. Supervisors such as the CAT8710FTD-GT3 are a type of PMIC that are designed to monitor the power supply and reset the circuit when a fault condition occurs. The CAT8710FTD-GT3 is a fully integrated supervisor device that offers an independent power-on reset and a watch dog timer with only three external components. It monitors two distinct voltage rails, a supervisory voltage, which can be adjustable to allow monitoring of multiple voltage supplies, and an on chip clock oscillator. The CAT8710FTD-GT3 also has an adjustable reset assertion delay for proper sequence and reset hysteresis for noise immunity. The CAT8710FTD-GT3 is mainly used in applications where the operating voltage may be up to 3.6V and can power off when the supply voltage drops below the 1.05V reset threshold. It provides manual reset with an active low RESET_B pin and a delayed reset with an active low RESET_D pin both of which have an adjustable time delay. The CAT8710FTD-GT3 is designed to meet robust voltage and temperature requirements, providing reliable reset and power-on conditioning for embedded and low-power systems.

The CAT8710FTD-GT3 supervisor is suitable for various applications including:

• Power management and system reset in consumer electronics systems, automotive applications, industrial control and automation, medical systems and other embedded systems.
• Battery powered systems, providing a “wake-up” reset signal when the battery voltage drops to an adjustable level.
• Mobile communication systems, providing voltage, temperature and reset monitoring.

The working principle of the CAT8710FTD-GT3 supervisor can be simplified into three steps:

1. It starts with the supervisor monitoring the voltage of both voltage rails and the clock oscillator in order to calculate predetermined trip points and reset criteria.
2. Once one of the monitored voltage rails or clock oscillator values are outside of the programmed ranges, the supervisor produces a reset signal.
3. Then it provides a reset signal to all other devices in the system to ensure proper reset of the system.

The CAT8710FTD-GT3 supervisor offers many advantages. The reset signal response time is trimmed to a precision of ±25%. The supervisor is protected against voltage spikes up to 40V, which is higher than most other PMIC supervisors on the market. It is also designed to significantly improve EMI performance.

Moreover, the supervisor features an adjustable reset assertion delay inherent to the design and can accommodate delays up to 15ms. This allows the reset signal to coincide with the corresponding voltage rail sequence, further ensuring proper reset of the system.

The CAT8710FTD-GT3 supervisor is a reliable, low-cost PMIC that is suitable for various applications where robust voltage and temperature support is required. Its design allows for simple and flexible system reseting, monitoring and power-on conditioning with only three external components and proven EMI performance.

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