LM285LP-1-2

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The LM285LP-1-2 is a precision voltage reference integrated circuit (IC) designed by Texas Instruments. It is part of the manufacturer’s broad family of voltage references, which are categorized into two types: low-dropout (LDO) and linear. The LM285LP-1-2 is a linear type, a category in which two other reference ICs are included—the LM285LP-2-2 and the LM285LP-3-2.

The LM285LP-1-2 is designed to accurately generate a precise reference voltage—within approximately 0.75% accuracy over the temperature range of -40°C to +105°C. It offers a wide supply voltage range of 3.3V to 36V, ensuring compatibility with both mixed-signal and regulated power supply designs.

The LM285LP-1-2 is used in a variety of applications including voltage scaling, voltage level shifting, analog-to-digital (A/D) or digital-to-analog (D/A) conversion, and precision regulation. It is popular in automotive designs and other high-performance, temperature-stable systems requiring reliable voltage references. It is also found in high-accuracy measurement and monitoring circuits, and in bar code scanners.

The LM285LP-1-2 is able to provide high-accuracy voltage reference outputs through the use of on-chip temperature-compensated bandgap references and laser-trimmed resistor networks. These components work together to ensure highly accurate and stable reference voltages over temperature and time.

The LM285LP-1-2 can be operated in both unipolar and bipolar modes, depending on the needs of the application. In unipolar mode, only one output voltage is available, and this is generated with a single output pin (VREF-1). In bipolar mode, two output voltages are available, with each one being driven by its own output pin (VREF-1 and VREF-2).

The LM285LP-1-2 also offers other features like low output noise, low quiescent current, and protection against reverse voltage, reverse current and short-circuits. It is available in an 8-pin SOIC package. The device delivers high reliability due to its use of laser trimming based on the target temperature range.

In summary, the LM285LP-1-2 is a precision voltage reference integrated circuit from Texas Instruments. It offers features such as high accuracy, low output noise, low quiescent current, and protection against reverse voltage, reverse current and short-circuits. It is particularly helpful in automotive designs and other high-performance, temperature-stable systems requiring reliable voltage references.

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