LT1389BCS8-1.25#TRPBF

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Voltage Reference

LT1389BCS8-1.25#TRPBF is a voltage reference which is commonly used in PMIC (power management integrated circuit) applications. Voltage references are precision circuit elements that provide a stable output voltage reference, typically between 0.1-5 Volts DC. Power management ICs provide an internal voltage reference to precisely set the output voltage as well as to ensure the desired output voltage remains stable regardless of its supply voltage.

In the LT1389BCS8-1.25#TRPBF, there are two main elements which work together to maintain the output voltage. The first is a voltage reference element, usually a Zener diode, which is used to establish a nominal reference voltage that is referred to as VREF. The second component is a voltage feedback control circuit which is used to adjust the output voltage to the desired voltage while maintaining the regulated voltage.

The LT1389BCS8-1.25#TRPBF is a low power (1.25mA) voltage reference that offers a 2.2V reference voltage and is suitable for medium-current applications. It operates over an input voltage range of 1.2V to 7.0V and is also capable of operating in stand-by mode among other operation modes.

The electrical features of the LT1389BCS8-1.25#TRPBF include an output voltage accuracy of ±0.2%, a maximum temperature coefficient of ±15ppm/°C, and maximum 0.1% initial accuracy. Furthermore, the device provides fast settling time and is capable of operating in both continuous and pulsed mode. It provides remote sensing, allowing for greater regulation accuracy, and has an adjustable output voltage range from 0.7V to 5.5V. Additionally, the LT1389BCS8-1.25#TRPBF can operate over temperature range of -40°C to +85°C.

The LT1389BCS8-1.25#TRPBF works by comparing the output of the reference element, VREF, to the voltage feedback control circuit, which is based on the output voltage. When the voltage feedback loop senses a fluctuation in the output, it adjusts the current on the reference element to maintain the regulated voltage. As a result, if the output voltage varies, the reference element’s current is adjusted to keep the output voltage at the desired level.

The LT1389BCS8-1.25#TRPBF is designed primarily for use in PMIC designs requiring a tightly regulated reference voltage, such as voltage rail regulation. It has a wide range of features which make it suitable for many circuits, from audio, RF and portable applications, to automotive designs and industrial power supply applications.

In summary, the LT1389BCS8-1.25#TRPBF offers a reliable and versatile voltage reference for power management ICs and other voltage regulation systems. It features an adjustable output voltage range, remote sensing, low power consumption and fast response time, making it suitable for many different applications.

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