MP2131 Datasheet | Monolithic Power Systems

The Future of Analog IC Technology DESCRIPTION The MP2131 is a monolithic step-down, switchmode converter with built-in internal power MOSFETs. It achieves a 4 A continuous output current from a 2.7 V to 5.5 V input voltage with excellent load and line regulation. The MP2131 is ideal for powering portable equipment that run from a single cell lithium-ion (Li+) battery. The output voltage is regulated as low as 0.6 V. The constant-on-time (COT) control scheme provides fast transient response, high light-load efficiency, and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limit and thermal shutdown. The MP2131 requires a minimum number of readily available, standard, external ponents and is available in an ultra-small QFN-12 (2mm x 2mm) package. The MP2131 is ideal for a wide range of applications including portable instruments, small handheld and battery- powered devices, PDAs, and DVD drives. TYPICAL APPLICATION High Efficiency, 4 A, 5.5 V, 1.2 MHz Synchronous Step-Down Converter Features - Wide 2.7 V to 5.5 V Operating Input Range - Output Voltage as Low as 0.6 V - 4 A Output Current - 35 mΩ and 18 mΩ Internal Power MOSFET - Above 96% Peak Efficiency - Above 80% Light Load Efficiency - Low IQ: 19 μA - 1.2 MHz Frequency - 100% Duty Cycle in Dropout - 0.5 ms Internal Soft-Start Time - EN and Power Good for Power Sequencing - Auto Discharge at EN Off - Short-Circuit Protection with Hiccup Mode - Available in a QFN-12 (2mm x 2mm) Package APPLICATIONS - Storage Drives - Portable/Handheld Devices - Wireless/Networking Cards - Low Voltage I/O System...