XC6108C10CGR-G

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The XC6108C10CGR-G is a current-sensing, battery-powered supervisory circuit specifically designed for dual-voltage processor applications featuring high-speed microcontrollers (MCUs). It is an integrated PMIC-supervisory circuit designed to provide system restart, power-on reset (POR) and power-down reset (PDN) functions, as well as an integral voltage detector that provides a reset flag, in software, for a low-voltage detect (LVD). 

The XC6108C10CGR-G provides for building a reliable protection scheme for MCUs and other integrated circuits that are powered by multiple power sources, such as battery, wall adapter and USB. It is a low cost, low supply current, single-battery supervisory circuit, with user-configurable reset thresholds and timing. The reset threshold accuracy is independent of the battery voltage, and thus offers a wide range of power sources and reset applications. 

The circuit also includes a current-sensing amplifier that is capable of sensing low current signals down to 10 µA. It is used to detect current changes that are larger than the monitored voltage change, alerting the MCU to take corrective action. The amplifier also provides device protection and robustness when powered by a lithium-ion battery that is typically used for system applications. 

The XC6108C10CGR-G adopts a simple mechanism for controlling the power supply, which incorporates a circuit that measures the current being supplied to the MCU and compares it with the programmed threshold. If at any time the current exceeds the set threshold, the MCU is reset. Additionally, the circuit can be configured to provide different levels of reset based on the configured threshold, allowing for a differentiated response for various levels of power failure. 

The XC6108C10CGR-G also includes a power-on reset (POR) and power-down reset (PDN) circuit. This provides a low-impedance reset signal that is asserted when the power supply voltage falls below a programmed voltage. Additionally, the POR/PDN circuit features an active low reset flag output, which enables software to monitor the reset status of the device. 

The XC6108C10CGR-G incorporates a low-voltage detect (LVD) circuit that is used to monitor the system voltage supply and provide a reset trigger for the MCU when the voltage drops below a pre-programmed level. The circuit is also capable of protecting the system from overvoltage conditions. The unique low-voltage detection feature enables the system to identify any failing battery cells before they possibly cause permanent damage to the MCU. 

In summary, the XC6108C10CGR-G is an ideal PMIC-supervisory circuit for dual-voltage processor applications featuring high-speed microcontrollers. Its integrated current-sensing amplifier and low-voltage detect circuits provide a comprehensive and reliable protection scheme for the MCU and system, while the POR and PDN functions enable a systematic power supply control. The reset threshold accuracy is independent of the battery voltage, providing a reliable protection scheme in a wide range of power supply and reset applications. 

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