LM385LP-2-5

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Power management integrated circuits (PMICs) are a subset of analog ICs that regulate the power supply voltage to keep it within a set range. The LM385LP-2-5 is a two-pin precision voltage reference IC designed to operate on a wide range of power supply voltages. It is well suited for a variety of precision applications where a highly stable and accurate voltage reference is needed.

Functionality

The LM385LP-2-5 is a low-power precision adjustable voltage regulator that utilizes a band-gap reference to provide a stable voltage output. This feature allows it to maintain a very accurate and precise output reference voltage over variations in temperature and line voltages. The output of the IC is adjustable within a range of 0.7 V to 5 V using an external resistor. The output voltage is directly proportional to the ratio of two external resistors. The IC can deliver a maximum output current of 20 mA with a minimum load current of 2 mA.

Features and Benefits

The LM385LP-2-5 voltage reference IC is designed to provide an extremely precise and accurate output reference voltage over wide temperature range and supply voltage variations. The device also features wide input voltage range, low power consumption, and low temperature coefficient. The IC is available in an industry standard five-pin metal can package, which simplifies the integration in electronic systems. Compared with discrete voltage reference circuits, the IC offers a simpler and more accurate solution.

Applications

The LM385LP-2-5 precision voltage reference can find applications in many different types of electronic systems. Some of the common applications of the IC include, but are not limited to, system voltage monitoring, precision analog-to-digital converters, digital-to-analog converters, voltage controlled oscillators, and battery-powered applications. The device can also be used in industrial, automotive, and medical systems.

Working Principle

The LM385LP-2-5 voltage reference IC utilizes a bandgap reference circuit to create an accurate and precise output voltage. The bandgap reference works by generating a voltage based on two voltage sources that are of opposite polarity and are connected in series. The two oppositely polarized voltage sources are connected together at the center, forming a voltage divider. The output voltage from the voltage divider is stabilized by a precision current source that acts as a temperature-compensated reference source. The output of the current source is then applied to the resistor network to control the output voltage.

Conclusion

The LM385LP-2-5 is a precision adjustable voltage regulator IC designed for a wide range of power supply voltages. This low-power voltage reference IC utilizes a bandgap reference circuit to create an accurate and precise output voltage over temperature and supply voltage variations. The LM385LP-2-5 is well suited for a variety of precision applications where a highly stable and accurate voltage reference is needed.

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