MCP1316T-31LE/OT

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Power management integrated circuits (PMICs) are fully integrated circuits that simplify the design and deployment of designs requiring complex power management functions. PMICs support a range of integrated features such as voltage regulation, switching, multiple supply voltages and communication interface features. One particular PMIC is the MCP1316T-31LE/OT, which belongs to the family of supervisors. Supervisors are used to monitor operating voltages and provide manual reset functionality.

MCP1316T-31LE/OT is a high precision voltage supervisor circuit. It is designed to monitor voltage level on two input sources, two independent internal band gap analog referenced voltage threshold detectors and an internal 100kHz oscillator. It is based on a single phase voltage monitoring solution with active-high and active-low reset outputs. The active high reset output has an assertion level of 4.75V and de-assertion level of 3.5V. The active-low reset output has a de-assertion level of 1.5V and an assertion level of 2.85V. The MCP1316T-31LE/OT also features a power-on reset which delays the reset output by a programmable time between 68 μs and 7 seconds. A single reset function is available, which produces downstream voltage lockout on the reset signal when the voltage drops below the specified level.

The MCP1316T-31LE/OT is housed in a SOT23-5 package and operates over a temperature range of -40°C to 85°C. It was designed to suit many microcontroller applications including controlling the level of chip reset, and monitoring supply voltage, battery voltage, power-up or power-down and reset signaling. This integrated circuit is typically used in battery management, power control, and power protection circuits.

The MCP1316T-31LE/OT has many features which make it ideal for extremely low power applications and systems. These features include programmable current limitation, low power consumption, and high precision voltage detection. It has a high input impedance which eliminates the need for external voltage dividers, thus saving component cost, board space and application complexity. This integrated circuit is designed to be used in high performance applications, such as microcontroller-based systems, digital signal processors, ASICs, and FPGAs.

The principle of operation for the MCP1316T-31LE/OT is based on the comparison of an internal reference voltage to an external voltage to be monitored. First, an external voltage is applied to the voltage input pin. The voltage is then compared to an internal reference voltage and if the supplied voltage is equal to or greater than the reference voltage, the reset signal is asserted. If the voltage drops below the reference, the reset signal will be de-asserted, indicating that the voltage has dropped below the required level. The reset is triggered only when the voltage drops from the monitored level. It is possible to program the on-delay time for the reset signal, thus providing additional control over the voltage monitoring process.

The MCP1316T-31LE/OT is an excellent choice for power management, with its low power consumption, precision voltage detection and programmable current limitation, making it suitable for a range of applications. Its high input impedance and single phase voltage monitoring provide a low complexity, low cost and reliable solutions. This integrated circuit has been designed to be used in high speed, low-power and multifunctional microcontroller based designs, making it an ideal choice for a wide range of applications.

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