LM285Z/NOPB

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The LM285Z/NOPB is an ideal voltage reference for a wide range of applications, from simple DC regulated power supplies to the most advanced switched-mode power supplies and active filters in high power audio amplifiers. Unlike the previous commercial voltage references, the LM285Z/NOPB is designed to give exceptional accuracy, stability, and low cost over temperature and process variations. The LM285Z/NOPB is a low-dropout, two-terminal precision voltage reference suitable for low-voltage power supplies and voltage/regulator designs.

The LM285Z/NOPB is a two-terminal, programmable, low-dropout precision voltage reference manufactured by Texas Instruments. It is designed to give exceptional accuracy and stability over temperature, process, and time. Its design and low dropout voltage (50mV typical) make it an ideal choice for low-voltage, low-power designs. The LM285Z/NOPB is available in a variety of temperature-stable configurations, making it adaptable to a variety of applications.

The LM285Z/NOPB operates on a standard 3V to 18V input voltage range at temperatures from -40°C to 85°C. This allows for flexibility in design and operation, which makes the LM285Z/NOPB applicable in a wide range of voltage regulator and active filter applications. The main application areas where the device excels include power supplies and switched-mode power supplies, audio amplifiers, and active filters. Thanks to its temperature compensation capability and low dropout voltage, the LM285Z/NOPB is also very suitable for low-voltage, low-power systems.

The principal of operation of the LM285Z/NOPB is based upon an internal differential amplifier, working in combination with a Zener diode. This diode is connected in reverse bias, forming a stable reference voltage. The two terminals of the device (in- and output) are then connected to the non-inverting and inverting pins of the amplifier. An internal bandgap reference adjusts the internal reference voltage and load compensation is provided by the output buffer amplifier.

The output voltage of the device is set by an externally connected resistor divider and is nominally 3V. A precision offset pin is provided to enable adjustment of the output voltage over a wide range. The device is also capable of regulating the output voltage over a wide range of loads, from 1 mA up to 2.5A.The LM285Z/NOPB has an extremely low quiescent current - typically just 1 mA - and can operate with very low dropout voltages - as low as 5mV across its full output range.

The LM285Z/NOPB is an ideal voltage reference for a wide range of applications because of its high precision, low-dropout voltage and low quiescent current. Its flexibility over temperature and process variations makes it suitable for a wide range of power supply designs, active filters, and audio amplifier applications. It\'s small size, low cost, and ease of use make it a very attractive device for voltage regulation and voltage references.

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