MC34064D-5G

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The MC34064D-5G belongs to a series of the MC34064 family of products, which are integrated circuits, or ICs, for use in Power Management and Internal Circuit Supervision, or PMIC-Supervisors. It is designed to provide a sequence of power on/off in which the power up occurs first and then the power down. The device also provides power monitoring and control, as well as supervisory functions to protect individual components from exceeding their operating conditions and to reduce development time. The MC34064D-5G is an integrated power management circuit which has low supply current, low quiescent current, and low supply voltage detection or UVLO. It is also capable of providing enabling and disabling of the input supply voltage on both the power-up and power-down sequences.

The MC34064D-5G comes in a SOT-23-5 package and operates over a temperature range of -40 to 125°C. It is available in an green or RoHS compliant package and is designed for use in a variety of applications, such as industrial instrumentation, factory automation, and consumer electronics. The device is well-suited for controlling the power-up and power-down sequence of microprocessors and other electronic components which require protection from overvoltage and undervoltage.

The MC34064D-5G includes two outputs: the unregulated voltage, called “unregulated voltage”, and the regulated voltage, called “regulated voltage”. The unregulated voltage is used to provide the input voltage, while the regulated voltage is used to control the output voltage. The device also has three inputs: the power supply voltage (VCC), the ground voltage (VBB), and the transient-suppression comparator voltage (VTR). The output voltage of the unregulated voltage and the regulated voltage is controlled by two separate and adjustable pin neurons. The regulated voltage is used for the initial supply voltage, which can be controlled by the success/fall time circuitry.

The MC34064D-5G is designed to provide a low quiescent current, low saturation voltage across the sense resistor, and fast response time during start-up or shut-down. The device also provides precise internal over-voltage and under-voltage protection, as well as providing fixed over-voltage and under-voltage protection. The adjustable UVLO feature allows the user to set the over-voltage and under-voltage trip points.

The device also provides an adjustable foldback current limiting feature, which limits the output current during short-circuit conditions. This feature is controlled by two resistors, which are connected across the main supply and the sense resistor. The main supply voltage and the sense resistor are also used to measure the output voltage of the unregulated voltage output.

The MC34064D-5G includes an Enable Input, an Over Voltage Output (OVO), a Temperature Protection Output (TPO), and a Fault Timer (FTIM) circuit. The Enable Input provides logic control for the device, while the OVO and the TPO circuits provide signaling output when the monitored voltage level is beyond predefined trip points. The FTIM circuit is used to delay applications until the voltage level returns to a safe level.

In a broad sense, the MC34064D-5G application field and working principle can be used in a variety of applications, including regulating voltage for low power AC/DC converters, controlling the power-up and power-down sequences for microprocessors, and providing over-voltage and under-voltage protection. Its features make it an attractive option in a wide range of applications, particularly where low quiescent current and fast response times are required.

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