MAX6473TA15AD3+T

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The MAX6473TA15AD3+T Ultra-low Iq, Low Dropout Regulator is a high performance, low dropout, low quiescent current, 3A, adjustable positive linear voltage regulator. It is targeted at general purpose applications and embedded control applications such as handhelds, automotive, computer and industrial applications. The device is capable of supplying over 3A and has a very low quiescent current of 400uA. It is adjustable from 1.1V to 15V and operates with any input voltage from 1.975V to 20V. The device is rated to operate over an ambient temperature range of -40°C to +85°C.

The MAX6473TA15AD3+T offers superior performance for its small physical size, making it ideal for space-limited applications. It features adjustable output voltage, low dropout voltage (145mV @ 3A load current), low current draw, thermal overload protection, short-circuit protection, and reverse-battery protection.

Application Field

The MAX6473TA15AD3+T is ideal for general-purpose applications such as handhelds, automotive, computer, and industrial applications. It is designed with a wide input voltage range of 1.975V to 20V and a low dropout voltage of 145mV @ 3A load current. The device has a wide output voltage range of 1.1V to 15V and can supply a continuous load current of 3A.

The device is particularly well suited to applications that require a low quiescent current. Thanks to its low static power consumption (400uA), the MAX6473TA15AD3+T is the preferred choice for energy-sensitive applications. The device is well able to handle harsh environmental conditions with its temperature range of -40°C to +85°C.

The MAX6473TA15AD3+T is capable of providing robust protection features such as a thermal overload protection, a short-circuit protection and a reverse-battery protection. This makes it ideal for use in portable devices that require a high level of reliability.

Working Principle

The MAX6473TA15AD3+T implements a standard 3A, low dropout linear regulator. The device uses a P-channel MOSFET as the pass device. The regulation point is set using an external divider resistor. The pass device is then turned on or off based on the difference between the input voltage and the regulation point. When the input voltage is higher than the regulation point, the pass device is on and current flows from the input to the output.

The MAX6473TA15AD3+T features a variety of protection features to ensure reliable operation. These include thermal shutdown, short-circuit protection, current foldback, and reverse-battery protection. The thermal shutdown feature helps protect the device from high temperatures and reduces heat dissipation, while the short-circuit protection helps protect against current overloads. The current foldback feature helps protect against over-current conditions, while the reverse-battery protection helps ensure reliable operation when the battery is reversed.

The MAX6473TA15AD3+T is a high performance, low dropout, low quiescent current, 3A, adjustable positive linear voltage regulator. Its wide input range, adjustable output voltage and low quiescent current make it ideal for a wide range of applications. Its thermal shutdown and protection features make it particularly suitable for portable devices. All these features make the MAX6473TA15AD3+T an ideal solution for general purpose and embedded control applications.

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