KA7809AE

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The Linear PMIC Voltage Regulator KA7809AE is a two-terminal, low-ratio (1:1-1:10) linear current-limiting device with in-line voltage regulation and active current-limiting features. The footprint is identical to a basic voltage regulator with much better performance and the active current limiting function makes it an ideal choice for many applications.

The Linear PMIC Voltage Regulator KA7809AE served as an easy-to-use voltage regulator with a wide range of gains and active current-limiting capability. It is designed to regulate the output voltage of a power supply within a specified range, while also limiting the maximum current that can be drawn from the supply. This protection against current surges is necessary to ensure the safe operation of the equipment.

KA7809AE typically employs an adjustable positive output voltage and is available in a 1.8V to 6.5V range. With a 0.9V–2.3V wide range, it can be used in a variety of applications requiring a regulated output ranging from 0.7V to 5.9V. Its operating temperature range is from –40°C to +85°C.

The KA7809AE linear PMIC voltage regulator consists of an advanced current-limited circuit, an error amplifier, and a series element for the accurate voltage regulation. As voltage drop occurs, the current-limit circuit increases the drive to the output, maintaining regulation. If the voltage drop increases to a level where the current limit cannot maintain regulation, the part triggers a shutdown state, thus protecting the circuitry downstream of the regulator. This increased protection against excessive current draw is an advantage of the KA7809AE linear voltage regulator over basic regulators.

The KA7809AE linear voltage regulator can be used in a variety of applications where the output voltage needs to be precisely regulated with excellent line and load regulation, such as power supplies, portable information technology devices, and analog/digital circuit boards. It is also suitable for battery-powered systems because of its low quiescent current and power dissipation characteristics.

The KA7809AE linear PMIC voltage regulator offers several advantages, including a wide range of gains, improved accuracy, low noise, and excellent line and load regulation. Its active current-limiting capability allows the device to protect against excessive current draw, and its low power consumption and wide operating temperature range make it well suited for both industrial applications and battery-powered systems.

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