NCP4625HSN28T1G

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NCP4625HSN28T1G Application Field and Working Principle

The NCP4625HSN28T1G integrated circuit (IC) is a linear voltage regulator manufactured by ON Semiconductor. It is part of their broad portfolio of power management components, specifically categorized as one of their 10V, 500 Win high-efficiency, low-noise, surface mount PMICs (power management integrated circuits). This device is capable of delivering 3A (mmax) with very low quiescent current over an operating temperature range of -40C to 125C.

The NCP4625HSN28T1G PMIC can be used in various applications such as automotive, automotive powertrain, industrial and telecom systems, as well as general purpose regulators for mobile phones, tablets, computers and other consumer electronics. It incorporates features such as output voltage accuracy (with external resistor divider) down to 0.8%, a programmable output voltage range (1.2V to 8.5V) with low power consumption and current consumption. Additionally, the device provides a low-side MOSFET to enable/disable the system power, as well as an internal current limit and thermal limit protection.

NCP4625HSN28T1G Working Principle

The NCP4625HSN28T1G PMIC functions by monitoring the output voltage and adjusting the output current to keep the output voltage constant. It does this using an error amplifier and control loop that controls a pass element. The control loop consists of the error amplifier, a voltage reference, an external resistor divider, and a pass element. The error amplifier compares the output voltage (Vout) to the voltage reference (Vref) and generates an error signal (Verr). The error signal is then fed into the pass element, which can be either a PNP bipolar transistor, an N-MOSFET, or an NPN bipolar transistor. The pass element will adjust the output current in order to maintain a constant output voltage. The output voltage can be set via an external resistor divider to any voltage within the range of 1.2V to 8.5V, making the NCP4625HSN28T1G ideal for use in a wide range of applications.

Conclusion

The NCP4625HSN28T1G is a PMIC device from ON Semiconductor, which is designed for automotive, automotive powertrain, industrial and telecom systems, as well as consumer electronics. The device is also designed for high-efficiency, low-noise operation, with a programmable output voltage range of 1.2V to 8.5V and low power consumption. The NCP4625HSN28T1G features internal current and thermal limits, as well as a low-side MOSFET that enables/disables the system power. The device utilizes an error amplifier and control loop to regulate its output voltage with an accuracy of 0.8%.

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