LM4128CMF-2.0/NOPB

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The Texas Instruments TPS51424 automotive power supply reference IC, otherwise known as the LM4128CMF-2.0/NOPB is a highly advanced, low-noise voltage reference circuit that is specifically engineered for power supply design within automotive, medical, and industrial applications. This unique reference IC provides an accurate output ranging from 2.45 V to 5.5 V with a low noise level of up to 4 µVRMS at a frequency of 10 kHz.

In terms of application field, the LM4128CMF-2.0/NOPB is suitable for use in power supply designs such as DC/DC converters, step-up regulator, battery charger, and buck converters. The device also provides excellent performance in both transient and steady state conditions, which makes it a great choice for designs that encounter large and small changes in their load requirements, environmental temperature, and other key operating conditions.

The LM4128CMF-2.0/NOPB is complemented with a variety of features that further enhance its performance. These include a fast transient response with a total integrated supply current accuracy of ±2 %, output voltage accuracy of 0.5 % at a temperature range of –40 °C to +125 °C, and power supply rejection ratio (PSRR) of 40 dB at 1 kHz. Furthermore, this Texas Instruments capacitive reference IC also offers temperature compensation provided by external resistors, which helps to maintain strict accuracy in all conditions. Lastly, the device exhibits a very low operating current of only 0.4 µA, which makes it a great choice for applications that require extremely low power consumption.

In terms of its working principle, the LM4128CMF-2.0/NOPB operates using a capacitive-type reference circuit. This type of reference circuit consists of a series of capacitors that form an RC filter with two nodes. The two nodes are connected to either end of the reference voltage source, and the filter reduces the noise level at the nodes. The output voltage is then regulated by the capacitors, which helps to maintain a stable, noise-free output voltage.

Overall, the Texas Instruments LM4128CMF-2.0/NOPB is a powerful and efficient voltage reference circuit, designed to offer superior performance in a wide range of power supply designs. The device features a low operating current, fast transient response, excellent accuracy, and low noise level, which make it suitable for use in applications such as DC/DC converters, step-up regulator, battery charger, and buck converters, among others.

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