TAR5SB18(TE85L,F)

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The TAR5SB18 (TE85L, F) is a linear voltage regulator from the PMIC (Power Management Integrated Circuit) family. It is a member of the TAR5SB series, which are voltage regulator devices used for various operations in the always-on consumer electronics such as smartphones and tablets. The TAR5SB18 is a small, low drop-out (LDO) device that is specifically designed for low current operations. It offers excellent stability and performance for a wide range of consumer and industrial applications.

Application Field

The TAR5SB18 has been designed primarily to be used in consumer electronics where minimal power consumption is required. It is designed to provide stable output regulation in the presence of input voltage variations, thus helping to ensure good system-level performance in battery-powered and portable applications. The output voltage accuracy of the TAR5SB18 is within ±2%; making it ideal for powering various components in consumer electronic devices such as processors and memory modules. In addition, the TAR5SB18 has a low quiescent current of 1.25 mA and low dropout voltage at light load current, thus ensuring low power consumption.

The TAR5SB18 also has a wide variety of uses in industrial settings. It can be used to provide stable output regulation in the presence of input voltage variations and can be integrated in various battery-powered applications such as portable medical devices and handheld instruments. The TAR5SB18 can be used in a wide range of applications that require low current and high accuracy, such as motor control circuits and home appliances. It can also be used in enterprise-grade applications such as field controllers and gateways.

Working Principle

The TAR5SB18 is a linear voltage regulator which helps to ensure reliable voltage regulation in the presence of input voltage variations. It operates by using a series of energy transfer stages which use a feedback loop to compare the output voltage level with the reference voltage level. The difference between these two voltages is used to adjust the gain of an amplifier stage, which in turn controls current flow through the series pass element.

The series pass element can be a simple resistor, or a transistor. In the case of the TAR5SB18, it is a P-channel MOSFET which is used to control the current flow. The resistance of the MOSFET is controlled by a voltage at its gate, which in turn is controlled by the feedback loop. When the output voltage rises higher than the reference voltage, the gain of the amplifier decreases, which lowers the voltage at the gate of the MOSFET and reduces the current flow through it. Conversely, when the output voltage is too low, the gain of the amplifier increases, raising the gate voltage of the MOSFET and increasing the current flow.

The TAR5SB18 also has additional features such as over-current protection and thermal shutdown, which help to prevent damage to the device due to excessive current flow or high temperature conditions. The device has an enable pin which can be used to enable or disable the regulator. It also has a reverse current protection circuit which ensures that current will not flow back into the external power source when the regulator is disabled.

The TAR5SB18 from the TAR5SB series is a small and low drop-out linear voltage regulator device. It is designed primarily for use in consumer electronics and industrial applications where low current and high accuracy are required. It operates by using a series of energy transfer stages which use a feedback loop to compare the output voltage level with the reference voltage level, thus allowing for stable output regulation even in the presence of input voltage variations. It has additional features such as over-current protection and thermal shutdown which help to increase safety and stability.

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