Monolithic Power Systems, Inc. Voltage Regulators - Linear + Switching MP2101DQ-LF-P

The MP2101DQ-LF-P is a dual-output voltage regulator featuring a synchronous step-down switcher and a low dropout (LDO) linear regulator. It supports an input voltage range of 2.5V to 6V for the switcher and 1.2V to the input voltage for the LDO. The switcher can deliver up to 800mA, while the LDO provides up to 200mA. The device operates at a fixed switching frequency of 1.6MHz and achieves efficiency levels of up to 93%. Key features include internal power MOSFET switches, thermal shutdown, cycle-by-cycle overcurrent protection, and a power-on reset output. The LDO has a dropout voltage of 280mV at a 150mA load, making it suitable for powering noise-sensitive components. The MP2101DQ-LF-P is packaged in a compact 3mm x 3mm 10-pin QFN, which is advantageous for space-constrained applications. It is ideal for use in portable devices such as smartphones, digital cameras, and PDAs.