SP706SCN-L/TR

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PMIC (Power Management Integrated Circuit) supervisors are typically used in systems such as portable devices requiring both battery and wall power operation, or systems such as notebook PCs that need a stand-by power source. The SP706SCN-L/TR is a programmable voltage supervisory circuit provided by ON Semiconductor, providing an approach to system supervision by monitoring and controlling the power supply voltages in a design.

Applications of the SP706SCN-L/TR
The SP706SCN-L/TR makes use of voltage supervisors to detect a power-on reset (POR) signal, supply under/over voltage fault conditions, and general power management. As it is a programmable voltage supervisory circuit, the part allows for a wide range of programmable features, and includes several design-controllable parameters such as a programmable reset threshold, reset timeout period and active-low delay. This allows for flexibility and convenience as the user can tailor the voltage supervisory circuit by programming these parameters as necessary for a particular project. Some of the general applications for the SP706SCN-L/TR include DC-DC converters, battery chargers, power supplies, UPS, server systems, and consumer electronics.

Working Principle of the SP706SCN-L/TR
The SP706SCN-L/TR is a digital voltage monitor with an integrated voltage reference, designed to monitor a wide range of power supply voltages. The supervisory provides system designers with an easy to use solution to detect power supply under and over voltage fault conditions, and a power/reset sequencing capability. The voltage monitoring threshold is preset at the time of manufacture, with a range of +2.5V, +2.2V, +3V, +3.3V, +5V, +12V and +15V available. The voltage monitoring threshold can also be programmed by the user. The SP706SCN-L/TR includes a built-in reference voltage of 1.20V, and provides an active-low assertion output for failed voltage level. When the power supply voltage falls below the programmed threshold, the active-low reset signal is asserted. The reset signal remains asserted until the voltage has been restored to a value above the programmed threshold.

The SP706SCN-L/TR is available in two packages: the 8-pin MSOP package and the 20-pin QFN package. Both packages are designed to accommodate an extended operating temperature range of -40°C to 105°C. The SP706SCN-L/TR is rated for operation from 1.2V to 3.6V, making it suitable for a wide range of voltages used in various circuits.

The SP706SCN-L/TR is a low-power voltage supervisory circuit, with a typical current draw of less than 7μA. This feature allows for integration into systems that require low power operation, and helps to reduce system cost as it eliminates the need for bulky external components commonly associated with voltage supervisory solutions. In addition, the integrated voltage reference eliminates the need for an external voltage reference for accuracy, making the SP706SCN-L/TR an ideal solution for applications where a high accuracy power monitoring solution is required.

The SP706SCN-L/TR offers superior accuracy, with an error rating at ±3%, making it ideal for applications requiring accurate voltage monitoring. The device also offers an adjustable reset threshold and reset timeout period, allowing system designers the flexibility to program the device as required for their specific application. The integrated delay feature ensures that when the power supply voltage reports to be in the good range, a release of the reset signal is delayed for a certain amount of time, creating a power/reset sequencing capability.

The integrated protection of the SP706SCN-L/TR includes internal protection from over voltage, shorted inputs or outputs, and reverse polarity output. These features help to further protect the circuit from damage due to user error or faulty connections. The integrated programmable features of the SP706SCN-L/TR make it ideal for use in a wide range of systems for power management, voltage monitoring and sequencing.

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