MC34164D-3R2G Integrated Circuits (ICs)

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PMIC (Power Management Integrated Circuit) is a type of integrated circuit designed to perform the necessary power management for embedded systems. The MC34164D-3R2G is a member of the family of PMICs used for power management. This particular unit offers a number of features, including low operating voltage, wide operating temperature range, a wide range of input current, power supply supervisory function, and adjustable output voltage.

Application Field

The MC34164D-3R2G is typically used for providing an adjustable supply voltage, which is a great feature for battery-powered devices. When power is supplied to the unit, it regulates the output voltage to the desired level, and when the input power is interrupted, it will switch off the output voltage and prevent further damage. Additionally, the MC34164D-3R2G can be used for supplying voltage to LCD displays, LEDs, and other display related components. In addition to power supply, the MC34164D-3R2G can also provide overvoltage, brownout, and low power supply protection. This is particularly relevant for systems that require reliable operation even in unstable power supply environments.

Working Principle

The MC34164D-3R2G works in two modes: the adjustable mode and the fixed mode. In the adjustable mode, the output voltage is adjustable in the range of 2.4V to 15V, and can be set by an external resistor divider. In the fixed mode, the output voltage is automatically set to the preset value and no external circuitry is required. The unit also works in two power supply modes: the standby and the active mode. In the standby mode, both regulator and supervisor circuits are disabled, which reduces the supply current drawn from the host system. In this mode, the MC34164D-3R2G draws only 1 uA of supply current to maintain a low standby power consumption.

The MC34164D-3R2G is also equipped with several other protections and supervisory functions. These include overvoltage and brownout detection, output current limit, undervoltage lockout, and POR detection. Overvoltage detection works by cutting off the output voltage when an excessive voltage is detected, while the brownout detection will protect against supplying too little voltage. The output current limit and undervoltage lockout are meant to prevent the supply current from becoming too high or too low. Finally, the POR (Power On Reset) function will reset the control circuit of the MC34164D-3R2G in case of a power failure, enabling the system to recalibrate itself accordingly.

The MC34164D-3R2G, with its wide range of features and protections, is a great choice for providing reliable power supply and supervision for embedded systems. It offers an adjustable output voltage, low supply current, and several protection features that help ensure the safety and reliability of the system.

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