Update: 28 September, 2023
The MAX8556/MAX8557 are low-dropout linear regulators that can operate from input voltages as low as 1.425V and 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. These regulators use an internal p-channel MOSFET pass transistor, resulting in a low supply current of 800µA typical, independent of the load current and dropout voltage. The use of a p-channel MOSFET eliminates the need for an additional external supply or a noisy internal charge pump. Additional features include 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 thin QFN 5mm x 5mm package with exposed paddle.
File format: PDF
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MD5 Checksum: 57D58D479FC7785088277159073840B7
Publication date: 09 May, 2012
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PDF Link: MAXIM INTEGRATED PRODUCTS MAX8556/MAX8557 handbook PDF