ADP151ACBZ-2.1-R7

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The ADP151ACBZ-2.1-R7 is an integrated passive device (IPD), commonly known as a linear voltage regulator. It is a power managing integrated circuit (PMIC) and belongs to a family of voltage regulators. PMICs are electronic circuits that manage power and protect circuits from abnormal conditions like power surges or overvoltage situations.

The ADP151ACBZ-2.1-R7 has a rated output voltage of 2.1 volts and is designed to provide clean and stable power supplies. Its main features include 200mV dropout voltage, 500mA output current, and protection against overvoltage, short circuit, and overtemperature.

The ADP151ACBZ-2.1-R7 integrates a variety of important components into a single device, including a voltage reference, power MOSFET, error amplifier, current limit, temperature limit and thermal overload protection. It is housed in a SOT-223 package, making it easy to use in surface mount applications.

The device is designed for use in a wide range of applications that require a stable and reliable power supply, including microprocessors, DSPs, and memory systems. It is also suitable for automotive, industrial and consumer applications.

Working principle

The ADP151ACBZ-2.1-R7 is an on-chip linear voltage regulator. It consists of an error amplifier, a voltage reference, a power MOSFET (metal-oxide-semiconductor field-effect transistor) and other associated circuitry that are interconnected to form a voltage regulating loop. The voltage regulating loop typically works in the following way:

The input voltage is applied to the non-inverting input of the error amplifier. The reference voltage is applied to the inverting input of the error amplifier. The output of the error amplifier is connected to the gate of the power MOSFET. The source of the power MOSFET is connected to the output control ground and the drain of the MOSFET is connected to the output of the regulator.

A small change in the input voltage will cause a change in the comparator output, resulting in the gate voltage of the MOSFET changing. This change in the MOSFET\'s gate voltage will cause a corresponding change in the source-to-drain current, resulting in a change in the output of the regulator. This process of changing the output voltage to match the reference voltage is known as feedback control.

The ADP151ACBZ-2.1-R7 also includes a variety of protection features that protect the device and the system from abnormal conditions. These include overvoltage protection, short-circuit protection, and thermal overload protection.

The ADP151ACBZ-2.1-R7 is a highly reliable voltage regulator designed to provide reliable and stable power supplies for a wide range of applications. Its low dropout voltage and protection features make it a versatile and cost-effective solution for powering microprocessors, DSPs, and memory systems, as well as automotive, industrial and consumer applications.

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