LP3962EMPX-1.8

LP3962EMPX-1.8 belongs to the Voltage Regulators category under PMIC (Power Management Integrated Circuit). More specifically, it is a Linear Voltage Regulator. It is a low-dropout (LDO) voltage regulator featuring an adjustable output from 1.125V to 1.8V and a true current-limit protection with foldback for an output current up to 1A. It is specifically designed for automotive and industrial control, as well as any other end equipments.

The LP3962EMPX-1.8 provides excellent line and load regulation and a fast transient response. The short-circuit and thermal protection feature protects the device and the equipped system. As with typical automotive designs, the chip is designed to include fast transient response and generous safety margins, independent of operating temperature.

The main function of this Linear Voltage Regulator is to maintain a constant output voltage while supplying power to dynamic loads. The voltage regulator is usually composed of control, feedback, and output stages. The control and feedback stages use error amplifiers or comparators to continuously adjust the output voltage to its specified level. The output stage is composed of an output amplifier, which is controlled by an error signal from the feedback stage and is used to control the output voltage.

LP3962EMPX-1.8 uses an adjustable output voltage established by the two external feedback resistances (R1 and R2) connected to the FB feedback voltage pin. The output voltage is programmed as follows:

V_o = 1.8V {1 + (R1+R2)/R2}

For example, if R1 and R2 are equals (R1 = R2), the output voltage will be 1.8V, and if R1 is 0, the output voltage will be 1.125V. Since the resistor values are not critical, the device has a wide range of adjustable voltage outputs.

The device also has a low output noise, high EMI immunity, low power consumption, and a fast transient response that enables the device to quickly and accurately respond to load transients. The device is protected against overcurrent and thermal overload conditions. In the event of overcurrent, the output current is folded back to avoid a short circuit between the power supply and the load. The device can also detect any over-temperature conditions, and will shut down if the input voltage is less than the minimum input voltage or is greater than the maximum input voltage.

To sum up, LP3962EMPX-1.8 is a low-dropout adjustable linear voltage regulator suitable for automotive, industrial control, or any other end equipments. It is designed to provide high reliability, a large number of adjustable voltage outputs, and excellent output noise, EMI immunity, and fast transient responses. It is also protected against over-current and thermal overload conditions to ensure safety and efficiency.