NCP300HSN09T1G

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PMIC (Power Management Integrated Circuit) Supervisors are specialized integrated circuits that monitor, manage and control system power. The NCP300HSN09T1G is a small and low-power PMIC supervisor designed for a specifically tailored range of applications.

The NCP300HSN09T1G is a Negative Voltage Supervisory Circuit, suitable for three or five-volt microcontroller applications. The device is a two-channel supervisor featuring precise regulation and digital functions for monitoring, reporting and controlling system power.

This device gathers supply voltage from several sources, compares them and serves as an interrupt flag when the pre-defined thresholds are exceeded.N.C. Philips’ NCP300HSN09T1G uses an N-Channel open-drain MOSFET to provide an active-low reset signal to the microcontroller.

Overall, the device is cost-effective and features high-accuracy comparators and extremely low current draw, making it an excellent choice for a wide range of applications.

Application Field

The NCP300HSN09 T1G is widely used to fulfil the supervisor roles in microcontroller applications. Its features are especially tailored towards the needs of battery powered systems, where precision and efficiency are must-haves. Some of the most common areas of usage for this device include:

• Automotive Applications
• Low-Power Devices
• Medical Equipment
• System Monitor and Controllers
• Chargers and Power Supplies

Working Principle

The working principle of NCP300HSN09T1G is quite simple. This device provides a Negative Voltage Supervisory Circuit. It continuously monitors the system to ensure that the voltage levels remain within the specified threshold ranges. The device features configurable undervoltage (UV) and overvoltage (OV) thresholds, along with dual supply comparators and a power-on reset (POR) circuit.

When the device detects an actual or impending system fault (voltage crossing its thresholds), it activates the open-drain MOSFET to trigger a power-down sequence. This allows the system to reset itself and continue functioning once the fault has been rectified.

Overall, the NCP300HSN09T1G fulfils supervisor roles in an efficient, precise and cost-effective way. Its low-power consumption, reset and interrupt capabilities, as well as its tight voltage regulation, make it an excellent choice for a wide range of applications. This includes automotive, medical, and power-supply monitoring.

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