MAX8795AGCJ/V+GB

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The MAX8795AGCJ/V+GB is a special purpose member of the PMIC family: Voltage Regulators. It is a low noise, low dropout, adjustable linear regulator with current limiting, short-circuit protection, and thermal limiting. The device has an adjustable operating range of 2.6V to 20V, and an output current capability up to 5A.

This device is targeted for applications where low noise and low dropout voltage, combined with an adjustable output voltage, are of paramount importance.

MAX8795AGCJ/V+GB Application Field

The MAX8795AGCJ/V+GB is widely used in applications such as portable equipment, industrial systems, medical, and consumer devices. Examples of applications include power management for a USB port, digital audio, imaging devices, battery powered products, and portable multi-function devices. The device is also suitable for portable and wall power adapters, and medical applications such as imaging systems, infusion pumps, breathing support systems, and patient monitoring devices.

MAX8795AGCJ/V+GB Working Principle

The MAX8795AGCJ/V+GB utilizes an internal low dropout regulator (LDO) to regulate a voltage across a load. The LDO operates in an adjustable range of 2.6V to 20V. It is adjusted by an external resistor divider. The voltage at the EN pin is compared to the OUT voltage by an internal error amplifier. The two outputs of the error amplifier form the two inputs of the error comparator. When the OUT voltage is lower than the EN voltage, the EN voltage will be output to the gate of the internal P-Channel MOSFET. The P-channel MOSFET is then triggered on to supply current to the OUT pin.

The device also features three independent protection mechanisms: current-limit protection, short-circuit protection, and overload protection. The overload protection is active when the OUT voltage rises 0.3V above the maximum input voltage for a sustained period of time. The current-limit protection and thermal shutdown features are designed to keep the temperature of the device from rising too high, maintaining it in a safe operating range.

Conclusion

In conclusion, the MAX8795AGCJ/V+GB is a specialized voltage regulator, capable of providing a wide range of output voltages and current capacities. It is targeted for applications like portable equipment, industrial systems, medical, and consumer devices, where low noise and low dropout voltage, combined with an adjustable output voltage, are of paramount importance. It also features an array of independent protection mechanisms, designed to maintain the device in a safe operating range.

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