LM4040BEM3-5.0+T Integrated Circuits (ICs)

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Power Management Integrated Circuit (PMIC) is an integrated circuit or system that manages all the power and energy related operations, including voltage regulation, voltage detection, current monitoring, and supervisory control. Voltage Reference is a reference point for other circuits to compare their output voltage. LM4040BEM3-5.0+T is a monolithic voltage reference IC from Texas Instruments, which provides very low power consumption of 0.4 mA, extremely stable output voltage, and also tight temperature coefficients.

The LM4040BEM3-5.0+T belongs to Texas Instruments’s LM4040 Series of Bipolar Voltage Reference. It is offered in a wide range of initial voltage accuracy from ±0.3% to ±3%. It is built on a conventional and cost-effective chip-scale package outline, in order to reduce the power consumption, cost and size of the whole circuit. The LM4040BEM3-5.0+T also employs an advanced and reliable design that guarantees long-term stability and accurate operation, thus making it suitable for a wide range of applications.

One of the most popular applications of LM4040BEM3-5.0+T is in precision clamping and overvoltage protection. It is used to set a precise voltage point, such that other circuits connected to it will not be damaged. It also works to provide over-voltage protection, by accurately clamping the voltage supplied to other circuits so that they are not damaged. Other applications include voltage level detection, low dropout linear and switching regulators, precision comparators, A/D and D/A conversion, battery backup and monitoring, and portable instrumentation.

The LM4040BEM3-5.0+T can be used in temperature coefficient auto-correction circuits. A special feature of this device is that it has an internal temperature compensation circuit that automatically adjusts its reference voltage as the ambient temperature changes. This feature prevents the need for external components, thus adding to its cost effectiveness.

The LM4040BEM3-5.0+T uses a bandgap reference circuit, which is a proven design to produce a highly stable reference voltage. This reference output voltage is independent of the load current and ambient temperature. The internal Architecture consists of a bipolar transistor and an amplifier circuit, which provides a tuned feedback loop. This tuned feedback loop is responsible for maintaining the reference voltage output of the IC in spite of variations in temperature and load current.

This LM4040BEM3-5.0+T operates on a single supply ranging from 2.4V to 40V. It can sink and source 150μA of current, and the absolute accuracy is 6mV. The LM4040BEM3-5.0+T also includes reverse-battery protection and input-overvoltage protection. It is a low power device with a power dissipation of 0.4 mA, and it operates over a wide temperature range from -40°C to 85°C.

In summary, Texas Instruments’s LM4040BEM3-5.0+T is a low power, stable and accurate voltage reference IC, which provides wide variety of applications. This device offers precise reference voltage, reverse-battery protection, input overvoltage protection and wide temperature range. It is a cost effective and reliable solution for various power management, voltage level detection, and precision clamping and overvoltage protection.

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