MAX77756CEWL+T

The MAX77756CEWL+T is a device designed to provide a voltage output that is dependent on the input voltage. It is part of a family of products which incorporate either one or two buck switching regulators, with an integrated power-on reset, reverse-battery protection, and reverse-current blocking. This device is targeted for laptop or notebook PCs, PDA phones and netbooks. It is a low-power DC-to-DC Step-down voltage regulator with specific features for required energy saving in portable systems.

The MAX77756CEWL+T application field and working principle is based around its single buck-switching regulator. It is designed to regulate a voltage at the output rather than just a current. A switching regulator will use switches to transform the voltage of the input in order to provide the desired output. The switches can be mosfets, LEDs, or other transistors. The MAX77756CEWL+T contains two sets of synchronized switches which can operate at higher frequencies than could be achieved with traditional power regulation circuitry.

The MAX77756CEWL+T is capable of providing power at a high efficiency rate and provides a highly integrated, cost effective solution for portable systems. Its system-on-chip design encompasses a low dropout regulator, programmable power-train control logic, a power-on reset circuit, reverse battery protection, reverse current blocking, and over voltage protection. It features a built-in safety valve circuit which controls current to the output load and reduces output load current in the event of an over-current condition. The MAX77756CEWL+T also provides a wide range of output voltage options, adjustable via external resistors, adjustable output current limit and adjustable shutdown voltage.

The MAX77756CEWL+T is powered by a single-voltage supply, usually a 1.5V input. It is designed to be used in portable systems and to minimize power-consumption. Its switching frequency is optimized to minimize the output ripple and ensure low-noise operation, while its integrated power-on reset circuit provides an indication of system status and resets the regulator when required. The power good indication feature lets system designers know when the output voltage is within specification, and the reverse battery protection circuit protects against damage due to reversed battery connections.

In addition, the MAX77756CEWL+T features anti-ringing circuitry to reduce EMI FIGURE noise generated by the buck switching and soft-start to prevent over-current conditions during system startup. This device is also capable of up to 2A of current and can be operated in either continuous or discontinuous conduction mode. It also has a wide temperature range which allows it to operate in more extreme environments. In summary, the MAX77756CEWL+T is a highly integrated, cost-effective, low-power DC-to-DC switching regulator that is the ideal solution for laptop or notebook PCs, PDA phones and netbooks.