LM4040AIM3X-3.0/NOPB Integrated Circuits (ICs)

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The LM4040AIM3X-3.0/NOPB is a Voltage Reference device created by Texas Instruments which belongs to Power Management ICs (PMICs) family. This Voltage Reference device is specifically designed for applications requiring up to 10mA of current and an output voltage range from 2.048V to 4.096V. In these sorts of applications, the most important feature of LM4040AIM3X-3.0/NOPB is its extremely low temperature drift characteristics of 2 ppm/°C, which ensures reliable performance in any temperature conditions.

The lower power output versions, such as the LM4040AIM3X-2.5/NOPB which provide current down to 5mA, are available in an SOT-23 package. All LM4040AIM3X variants thus provide typical reference voltages ofTP/2.048V, 2.5V and 4.096V.The LM4040AIM3X-3.0/NOPB can be conveniently characterized as two diode-connected transistors operating in active region.

The two transistors, which are similar to a Grounded Emitter Amplifier, have their emitters connected to a common point called “the Reference node”. This node is usually connected to the Ground and the outputs of both transistors are adjustable according to the values of two resistors.

The current through the transistors is obtained by connecting a resistor between the Reference node to the Collector of each transistor. As the current in both transistors is equal, the output voltage is the same voltage as one of the transistors’ base voltage. This output voltage will be independent of the temperature.

The output terminals of LM4040AIM3X devices are protected with current limit and short circuit protection. The short circuit protection ensures that the output voltage is maintained between 1.6V and 7V. In case of over current conditions, the current limit shuts down the device until the current drops to a safe level.

The LV version of LM4040AIM3X is designed with an ultra-low dropout voltage of 60mV at 10mA. This low dropout voltage is obtained by using an Isolated Submicron CMOS process, which ensures excellent performance and low noise operation.

The LM4040AIM3X-3.0/NOPB is typically used for onboard shunt voltage trimming, adjustable voltage references for field programmable gain amplifiers, and adjustable power supplies, among other applications. Because of its excellent temperature coefficient performance and features such as its selectable output voltage range, the LM4040AIM3X-3.0/NOPB is suitable for use in many power management applications.

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