MAXIM MAX8556ETE+T

The MAX8556/MAX8557 low-dropout linear regulators operate from input voltages as low as 1.425V and are able to deliver up to 4A of continuous output current with a typical dropout voltage of only 100mV. The output voltage is adjustable from 0.5V to VIN - 0.2V. Designed with an internal p - channel MOSFET pass transistor, the MAX8556/MAX8557 maintain a low 800μA typical supply current, independent of the load current and dropout voltage. Using a p - channel MOSFET eliminates the need for an additional external supply or a noisy internal charge pump. Other features include a logic - controlled shutdown mode, built - in soft - start, short - circuit protection with foldback current limit, and thermal - overload protection. The MAX8556 features a POK output that transitions high when the regulator output is within ±10% of its nominal output voltage. The MAX8557 offers a power - on reset output that transitions high 140ms after the output has achieved 90% of its nominal output voltage. The MAX8556/MAX8557 are available in a 16 - pin TQFN 5mm x 5mm package with exposed paddle.

• 1.425V to 3.6V Input Voltage Range
• Guaranteed 4A Output Current
• ±1% Output Accuracy Over Load/Line/Temperature
• 100mV Dropout at 4A Load (typ)
• Built - In Soft - Start
• 800μA (typ) Operating Supply Current
• 150μA (max) Shutdown Supply Current
• Short - Circuit Current Foldback Protection
• Thermal - Overload Protection
• ±10% Power - OK (MAX8556)
• 140ms Power - On Reset Output (MAX8557)
• Fast Transient Response
• 16 - Pin TQFN (5mm x 5mm) Package

• Servers and Storage
• Optical Modules Devices
• Point - of - Load Supplies
• Networking
• ATE
• Base Stations