S-1172B12-E6T1G

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Linear voltage regulators are used to ensure that the output voltage remains within a given range regardless of input voltage. The S-1172B12-E6T1G is a step-down DC-DC converter adjustable linear voltage regulator designed specifically for power management applications. The device is designed to convert input voltages between 2.95V and 23V to a stable output voltage of up to 12V with an output current of up to 1A. It offers better line and load regulation and low dropout voltage, making it suitable for portable and battery-powered devices.

The S-1172B12-E6T1G is a monolithic integrated converter with protections against current and voltage overloads. It has reverse polarity protection to prevent the output from being damaged when connected to incorrect voltages. It offers a wide range of features and performance benefits in many power system designs, including: high efficiency over a wide range of load current and output voltage; high ripple rejection; wide input voltage range; and low minimum operating current. Additionally, it has a low quiescent current, fast load transient response, protection against thermal shutdown, over current protection, and over voltage protection.

The S-1172B12-E6T1G is ideal for a wide range of applications, including cellphone chargers, TV sets, stereo amplifiers, and notebook computers. This device is well suited for managing power in portable and battery-powered applications such as personal computers, because of its wide input voltage range, low drop out voltage, and ultra-low quiescent current capabilities. It is also suitable for automotive applications such as in-dashboard LCD displays, digital dashboards, and other automotive applications.

The S-1172B12-E6T1G is a two-terminal pass transistor, linear voltage regulator, operating at an adjustable output voltage (VOUT) between 0.8V and 12V. The input voltage (VIN) can be from 2.95V to 23V. The device operates in a fixed output mode where the output voltage is constant and determined by connecting a resistive divider network across the output and REF terminals, and has a current limit of 1A. The device has a built-in thermal shutdown circuitry that protects it against overheating. It is also protected against reverse connection and has an over-current protection (OCP) circuit.

The device operates in the buck-boost mode of regulation. In buck mode, the switching regulator switches current from Vin to ground and the output voltage is determined by the ratio of resistances connected to the output and the reference terminals, enabling the use of a higher input voltage than that of the output. In boost mode, current is switched from VOUT to ground and the output voltage will be higher than that of the input.

The S-1172B12-E6T1G from STMicroelectronics is a linear voltage regulator that offers high efficiency, low dropout voltage and excellent line and load regulation. Its wide input voltage and output current range, low quiescent current and fast load transient response make it ideal for a variety of power management applications. With a simple resistive divider, the output voltage is adjustable over the range of 0.8V to 12V.

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