MAX8556ETE/V+T

The MAX8556/MAX8557 series of low-dropout linear regulators from Analog Devices are designed for applications requiring high current and low input voltage. They operate from input voltages as low as 1.425V and can deliver up to 4A of continuous output current with a typical dropout voltage of only 100mV at 4A load.

The output voltage is adjustable from 0.5V to VIN - 0.2V. These regulators feature an internal p-channel MOSFET pass transistor, maintaining a low 800μA typical supply current independent of load or dropout voltage. Additional features include logic-controlled shutdown, built-in soft-start, short-circuit protection with foldback current limit, and thermal-overload protection.

The MAX8556 includes a Power-OK (POK) output that indicates when the regulator output is within ±10% of its nominal voltage. The MAX8557 provides a power-on reset (POR) output that transitions high 140ms after the output reaches 90% of its nominal voltage.

These devices are available in a 16-pin TQFN 5mm x 5mm package with an exposed paddle, suitable for surface mounting. Applications include servers, storage devices, networking equipment, base stations, optical modules, point-of-load supplies, and ATE systems.