LT1790ACS6-3#TRMPBF Integrated Circuits (ICs)

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LT1790ACS6-3#TRMPBF is a family of Low Dropout (LDO) Voltage References specified by Linear Technology Corporation and is part of the PMIC (Power Management Integrated Circuit) - Voltage Reference family. It is designed to be used as a regulated reference voltage source, providing a precise voltage or current output over a wide temperature range.

The LT1790ACS6-3#TRMPBF features an input voltage range from 1.4 V to 40 V, providing a current output capability of up to 600 mA. It has an output voltage range of 0.6 V to 4.3 V and a low drop-out voltage of only 25 mV. This low drop-out voltage allows the LT1790ACS6-3#TRMPBF to provide a stable, low-noise voltage output even when the input voltage is close to the output voltage.

The LT1790ACS6-3#TRMPBF utilizes an advanced bipolar process, providing tight output voltage regulation and excellent long-term stability over a wide variety of temperatures (-55°C to +125°C). This makes it well suited for applications requiring precision output voltage or current, such as instrumentation, telecom, audio, and industrial signal processing.

The LT1790ACS6-3#TRMPBF is available in fixed voltage configurations. It features a maximum current limit of 600 mA, and is protected against over-current and short-circuit conditions. It also includes thermal shut-down and fold-back protection.

Additionally, the LT1790ACS6-3#TRMPBF incorporates a low output voltage noise of 0.7 µV RMS, low output impedance, and a high PSRR of 80 dB for superior performance. It is also RoHS and WEEE compliant, making it ideal for a broad range of applications.

The LT1790ACS6-3#TRMPBF works by regulating a voltage output relative to the input voltage. This is accomplished by using a combination of a voltage sensing circuit and a controlled current source. The voltage sensing circuit compares the reference voltage (the output voltage) to an internal band-gap reference voltage. The controlled current source then adjusts the voltage output to maintain the output voltage relative to the reference voltage.

In operation, the LT1790ACS6-3#TRMPBF monitors its input voltage, via the voltage sensing circuit, and adjusts its output voltage accordingly. When the input voltage drops, the voltage sensing circuit signals the current source to increase the current in order to maintain the desired output voltage. When the input voltage rises, the voltage sensing circuit signals the current source to decrease the current in order to maintain the desired output voltage. This allows the LT1790ACS6-3#TRMPBF to maintain a precise, regulated output voltage in spite of varying input voltage changes.

The LT1790ACS6-3#TRMPBF is well suited for portable, battery-operated devices, providing a stable, regulated output voltage over a wide input voltage range. It is also suitable for use as a reference voltage source in precision ICs (Integrated Circuits), instrumentation circuits, and telecom equipment.

In summary, the LT1790ACS6-3#TRMPBF is a Low Dropout (LDO) Voltage Reference suitable for use in a wide variety of applications, providing a precise voltage or current output over a wide temperature range. It is well suited for portable, battery-operated devices due to its low dropout voltage and high PSRR. Additionally, its RoHS and WEEE compliance makes it ideal for a broad range of applications.

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