MAX5090AATE+T

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The MAX5090AATE+T is widely used in many fields as a voltage regulator, including DC DC switching regulators. It is widely used in many industries such as automotive, communications, consumer electronics, computing, industrial and medical applications. The MAX5090AATE+T is optimized for space-efficient applications and features a low voltage dropout of 250mV at 2A.

The MAX5090AATE+T is a low dropout (LDO) controller that enables the implementation of DC/DC voltage regulation functions. It features a synchronous step-down converter with an adjustable output voltage range of 0.8-5V, a quiescent current of 10μA and a 600mA peak current limit. It also includes an internal voltage reference, low dropout voltage, undervoltage lockout (UVLO), and current limit.

The internal frequency of the MAX5090AATE+T is adjustable for improved noise performance and with its 600mA current limit it is suitable for space-constrained applications. It has a low quiescent current of 10μA and can operate in high-side synchronous rectification, allowing the use of a low-cost ideal diode for reverse current blocking. It also provides enable and power saving functions.

The working principle of the MAX5090AATE+T is a two-stage process involving the use of an error amplifier, a resistive voltage divider, a low dropout (LDO) reference, and a precision current mirror. When the voltage at the output is not stable, the error amplifier compares the reference voltage (Vref) to the actual voltage at the output. The difference between the two voltages is the error voltage, which is amplified and applied to the gate of the output transistor. This controls the output voltage.

The low dropout reference (LDO) provides a stable reference voltage for error amplifier and output transistor gate control. The precision current mirror maintains a constant voltage across the resistive voltage divider. The output voltage is determined by the voltage divider that is set by the user. The MAX5090AATE+T has a power-on reset circuit, an undervoltage lockout (UVLO), and a thermal shutdown circuit that provide protection from unsafe operating conditions.

The MAX5090AATE+T is suitable for use in DC/DC voltage regulation applications ranging from portable systems to industrial equipment. Its precision current mirror and output voltage accuracy allow design flexibility and ease of implementation. Its high efficiency and low quiescent current make it an optimal choice for efficient power management solutions.

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