LM385M/NOPB

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Power Management Integrated Circuits (PMICs) are electrical circuits designed to reduce energy consumption and achieve better performance for all types of applications. Specifically, Voltage References such as the LM385M/NOPB are designed to maintain a precise voltage level regardless of noise or changes in current loading. By providing a constant reference voltage, application design optimization, accuracy and efficiency can be improved significantly.

The LM385M/NOPB is a precision voltage reference intended for use in low current applications. This Voltage Reference has an operating temperature range of -40ºC to +125ºC, a low voltage dropout (1.2V) and low supply current (2.2mA). It offers up to 20MHz of operating frequency, with 80mV drift rate and 0.1% error band over the operating temperature range. The LM385M/NOPB is designed to provide a stable output voltage of 2.5V, which is independent of the supply voltage changes. This device can also be used for generating reference voltages up to 4.4V.

The most common application for the LM385M/NOPB is in circuits that require a low power and exact reference voltage. It can be used as part of a voltage regulator to provide a stable voltage source for a system or sub-circuit, such as a voltage amplifier or voltage converter. Aside from this, the LM385M/NOPB can also be used to set a precise level of voltage in precision circuits, such as those in audio and video equipment. Another application of this device is in analog-to-digital conversion, where it can ensure a precise voltage level of the analog signal used to represent a digital value.

In terms of working principle, the LM385M/NOPB is a three-terminal device that is constructed using a bandgap reference scheme. It contains an excitation transistor, a current mirror and a voltage reference circuit, which create a voltage reference output. The reference voltage is generated by a differential pair of transistors through a bandgap reference technique, in which the offset voltage is generated to adjust the reference voltage output in order to maintain a much higher accuracy. This technique is used by the device to ensure that the reference voltage is stable and highly accurate, regardless of the variations in power supply or operating temperature.

The LM385M/NOPB is a widely used Voltage Reference capable of maintaining a precise voltage despite the changes in power supply or operating temperature. Its wide operating temperature range and low voltage dropout make it suitable for many applications. With its bandgap reference technique, it can easily generate a stable and very accurate voltage reference output, allowing for precision in various applications from voltage regulators to audio/video equipment.

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