LM4050QBIM3X2.0/NOPB

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LM4050QBIM3X2.0/NOPB is a PMIC - Voltage Reference designed for taking both supply and reference voltage with application in various fields.

The device is an integrated band gap reference consisting of a temperature-compensated and trimmed 3V2/6V band gap followed by a two-section amplifier. Using two series-connected external resistive dividers, it acts as an adjustable voltage reference with an output set by the ratio of external resistors with a range of 0.25V–4V for the LM4050-3V2, and 0.5V–6V for the LM4050-6V.

LM4050QBIM3X2.0/NOPB provides a stable reference voltage to accurately set circuit parameters and improve manufacturing testability. It comes with remote sensing, error voltage reporting, and thermal overload protection features. It is a cost-effective, easy-to-use, and reliable alternative to discrete band gap circuits.

The working principle of LM4050QBIM3X2.0/NOPB is quite straightforward. The external resistors sets the output voltage relative to the VIN pin. In comparison to the voltage reference (VREF) pin, the output voltage is set equal to the difference of VREF and IREF multiplied by the ratio of RA and RB. The Temperature Coefficient (TC) of the reference voltage is very low, typically 20 ppm/°C.

LM4050QBIM3X2.0/NOPB is widely applied in several fields, such as power electronics, automotive, consumer, and industrial. It is used in AC adapters, chargers, and supplies. The device is also suitable for LED constant currrent regulation, and power supply circuit, battery protection and monitoring, medical electronics and electrochemical protection, linear and switching regulators, voltage programming, and instrumentation.

The power good signal in LM4050QBIM3X2.0/NOPB can be used to detect the presence of a valid voltage and indicate either power down or system ready condition. The error reporting feature of the device can detect an output voltage drop greater than a user-defined tolerance. Upon detection of such an event, an active low active error reporting flag signals the presence of an error condition.

The thermal overload protection feature integrated in LM4050QBIM3X2.0/NOPB is extremely useful for controlling the inrush current at the startup of the voltage reference device. In case of reaching the thermal shutdown temperature of 150 °C a reset signal is activated. After the thermal shuts down the device, it will remain in shutdown until the temperature has fallen to about 125 °C.

LM4050QBIM3X2.0/NOPB device from Texas Instrument is able to take both supply and reference voltage and offers a wide range of application in various fields while providing stable reference voltage. The device also comes with thermal overload protection, error voltage reporting and remote sensing features.

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