NCP176AMX100TCG

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NCP176AMX100TCG Application Field and Working Principle

NCP176AMX100TCG is a linear voltage regulator manufactured by ON Semiconductor. This device is part of the PMIC (Power Management Integrated Circuit) family and designed specifically for automotive engine control and power management applications. It is a low-cost monolithic regulator with low quiescent current and high accuracy. It provides up to 6A of output current and offers a wide input voltage range from 2.5V to 60V. The device comes in a compact, thermally enhanced QFN package with a 4x4mm operational temperature range from -40°C to 125°C.

Key Features and Benefits

• 2.5V to 60V input voltage range
• Wide output voltage range (from 1.8V to 8V)
• Low quiescent current: 35µA at light load and 14mA at full load
• High-accuracy output voltage (±1%)
• High-efficiency, up to 95%
• Low EMI and low-noise operation
• Internal Thermal Limit
• Small size (4x4mm)
• Operating temperature range: -40°C to 125°C

Applications

The NCP176AMX100TCG is designed for automotive applications such as ECU, CAN systems, ignition systems, powertrain control, and automotive sensors. The device is suitable for battery-powered applications, such as mobile phones, portable electronics, and personal navigation devices.

Working Principle

The NCP176AMX100TCG employs a conventional linear voltage regulator topology with a constant-voltage control loop. The input voltage is routed to the external dividers, which are used to control the voltage across the feedback resistor. The output voltage is monitored using the internal op-amp and comparator circuit, in order to adjust the output voltage to maintain constant voltage within the circuit. When the current drawn from the output exceeds the device’s maximum current rating, the internal over-current protection circuitry will shut down the output until the current is reduced to a safe level.

In order to protect itself from any unexpected thermal events, the device also employs an internal thermal limit circuit. When the temperature reaches the threshold, the internal circuitry will automatically shut down the device to prevent damage. The device has built-in Synchronization circuitry so that it can be connected to other devices in order to synchronize the operation of the output voltages.

Conclusion

Overall, the NCP176AMX100TCG linear voltage regulator is an ideal solution for automotive engine control and power management applications. It offers low cost, high efficiency, and low noise operation. The device is available in a small, thermally enhanced QFN package and operates in a wide temperature range from -40°C to 125°C. Its high-accuracy output voltage and internal thermal limit circuitry make it a reliable and robust solution for automotive applications.

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