MAX4940BETN+

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The MAX4940BETN+ is a specialized power management integrated circuit designed for a wide range of application areas. It provides a dual output power supply for applications that use low-voltage, high-current supplies. It will work with a wide voltage input range of 3V to 24V, output voltages up to 20V at up to 1.5A, and a wide range of dropout voltages.

The MAX4940BETN+ is a non-isolated solution that allows a single supply voltage to be supplied to two different outputs. This allows a single power source to be used for multiple output rails. The power supply has a very low quiescent current and low ripple and noise, making it ideal for powering a variety of circuits. The multi-mode protection feature ensures that the device does not get damaged during a power supply fault or overload condition.

The MAX4940BETN+ is well suited for a variety of applications, including cameras, sensors, power amplifiers, and embedded systems. It is particularly effective when used in portable applications, such as cell phones, wearables, and personal electronic devices, due to its ability to deliver dual voltage rails from a single power supply. It is also suitable for automotive applications, thanks to its reverse-voltage protection, thermal shutdown, and overcurrent protection features.

The working principle behind the MAX4940BETN+ is quite simple. It uses an external FET to switch between two outputs, and two P-type MOSFETs to provide regulated power to the outputs. The FET switch is controlled by an external voltage divider. The voltage divider is used to set the lower of the two output voltage rails, while the higher voltage is set by applying a DC voltage to the higher output. The device then uses the internal current-mode control loop to maintain a constant output voltage at the lower output, regardless of the current load on the other output. The P-type MOSFETs ensure a constant current and power is delivered, independent of load conditions.

The MAX4940BETN+ offers a number of features that make it well suited for a wide range of applications. It is easy to use, has low noise and ripple, and is protected from overcurrent and over-voltage conditions. Its small size and low quiescent current makes it ideal for applications where efficiency and space are of prime importance. The device is available in a 7-pin SOT-23 package, making it easy to incorporate into most designs. It is also RoHS compliant.

The MAX4940BETN+ is a specialized power management IC that is well suited for a variety of low-voltage, high-current applications. It is easy to use, requires no isolation, and is protected against fault and overload conditions. Its small size and low noise and ripple make it an ideal choice for a wide range of applications, including portable and automotive.

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