XC6121F733MR-G

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XC6121F733MR-G is a highly integrated supervisory circuit designed to monitor power supplies and reset microprocessor-based systems. It is constructed as a 10-solderable pin device and is provided in plastic DO-214AC (SMC) package.The XC6121F733MR-G is able to monitor power supplies such as Li-Ion, Ni-MH batteries and USB power. As a supervisor IC, it monitors the state of the main power supply, and once VDD drops below an internal threshold, the part removes its power from POR/RST and permanently stops the external MCU from executing instructions.The XC6121F733MR-G offers users the benefit of precise voltage detection and independent operation. It has on-chip temperature and voltage detectors, 12V / 400 mA low-side MOSFET, 1.7V to 5.5V bias voltage range, 0.9V to 4V output voltage range, 200mV accuracy of reference voltage, 400mV/step output voltage adjustment, and can operate at temperatures between –40°C and +85°C.

In terms of its operation mode, the XC6121F733MR-G turns on the POR/RST output at power on, and maintains in high-impedance operation during the normal operation of the microprocessor. The voltage detection range is typically from 1.7V to 5.5V and is adjustable in 400mV steps. When the input voltage drops below the under-voltage threshold, the output goes low and microprocessor reset is activated. The device then stays in low-impedance state, even when the input voltage rises above the threshold. This prevents any oscillation of the reset output due to the bouncing effect of the switch key or other cross-talk sources. It also ensures that high-current applications can be supported.

The XC6121F733MR-G features an automatic recovery mode which is able to reset the device with a specific sequence of power-on and power-off. This feature is especially useful in supervisory applications, as it is able to reset the system while depending on the power-on and power-off-timing that is preprogrammed. This allows the device to recover from under-voltage conditions or entire system shutdowns.The XC6121F733MR-G is an ideal supervisory IC that can be used in a variety of applications including automotive displays, portable devices, industrial, and medical instruments and so on.It can also be used in other applications such as but not limited to battery-powered handheld, automotive and portable applications, set top boxes and broadcast systems.

In conclusion, the XC6121F733MR-G is a highly integrated and advanced supervisory circuit specifically designed for monitoring power supplies and resetting microprocessor-based systems. It is widely used in a range of applications such as automotive displays, portable devices, industrial, and medical instruments. In addition, the part offers precise voltage detection and independent operation with an automatic recovery mode which is able to reset the system under predetermined power-on and power-off-timing. It is highly reliable and provides a cost-effective solution to power-on and power-off conditions.

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