LM285BXZ-2.5/NOPB

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The LM285BXZ-2.5/NOPB is a voltage reference integrated circuit (IC) aimed at usage in portable electronics, computer peripherals, and telecommunications systems. It is classified as a PMIC (power management IC) dedicated to assisting with the control and regulation of various voltages necessary for the proper functioning of a device. It belongs to the Voltage Reference family, which provides voltage to peripheral circuits and active components.

In terms of its main usage, the LM285BXZ-2.5/NOPB is typically employed in the power supply circuit of an electronic system, acting as an auxiliary power regulator. It has the capability to supply a stable 2.5Vdc output signal with a tolerance of ±3.0%. The main advantage offered by this voltage reference IC is its superior temperature stability, which is due to its cutoff frequency being higher than that of other similar products in its class.

The architecture of the LM285BXZ-2.5/NOPB is based on an advanced temperature compensated and trimmed bandgap reference cell coupled with an 18V buffer stage and an on-chip voltage divider. This arrangement allows the circuit to be used in a single- and multiple-supply operation. An internal protection resistor ensures the device is insensitive to load dump and load transients.

Going into further detail, the bandgap reference cell of the LM285BXZ-2.5/NOPB is designed to operate over a range of power supply voltages, giving the IC the flexibility to operate under varying application conditions. The buffer stage provides a low-impedance output with excellent supply rejection, while the on-chip voltage divider helps set the output voltage reference. According to the LM285BXZ-2.5/NOPB datasheet, its internal reference voltage can be adjusted from 1.2V to 3.4V by connecting the external pins.

Apart from its adjustable reference voltage feature, other notable characteristics of the LM285BXZ-2.5/NOPB include power supply rejection ratio (PSRR) of 68dB at 10Hz, a high output accuracy of ±1.5%, a low dropout voltage of 50mV in full load, a large output voltage range of 1.0 to 18V, and a maximum output current of 50mA. In terms of power dissipation, the device has a maximum quiescent current of 5mA and is capable of operating over a temperature range of -40°C to +125°C.

This voltage reference IC is available in an 8-pin plastic DIP package, making it well suited for prototyping applications. The LM285BXZ-2.5/NOPB is built using a CMOS process and hence, has a low power consumption and good noise immunity. A careful evaluation of the datasheet and application notes should be carried out before using the device in an electronics circuit, in order to obtain optimum performance.

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