MP2174C Datasheet | Monolithic Power Systems

DESCRIPTION The MP2174C is a monolithic, step-down, switch mode converter with built-in, internal power MOSFETs. It achieves 4A of continuous output current from a 2.7V to 5.5V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V. The constant-on-time (COT) control scheme provides fast transient response and easy loop stabilization. Fault condition protections include cycle-by-cycle current limit and thermal shutdown. The MP2174C requires a minimal number of readily available, standard external ponents, and is available in an ultra-small QFN-12 (2mmx2mm) package. The MP2174C is ideal for a wide range of applications, including PDAs, portable instruments, DVD drives, and small handheld devices. FEATURES - Forced PWM Mode Operation - Wide 2.7V to 5.5V Operating Input Range - Output Voltage as Low as 0.6V - 4A Output Current - 35mΩ and 18mΩ Internal Power MOSFET - Peak Efficiency Above 96% - 1.1MHz Frequency - 100% Duty Cycle in Dropout - 0.5ms Internal Soft-Start Time - EN and Power Good for Power Sequencing - Auto-Discharge at Power-Off - Short-Circuit Protection with Hiccup Mode - Available in a QFN-12 (2mmx2mm) Package APPLICATIONS - Storage Drives - Portable/Handheld Devices - Low-Voltage I/O System Power All MPS parts are lead-free, halogen free, and adhere to the Ro HS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION VIN C1 22µF EN PG PVIN VIN L1 1µH SW PG AGND NC PGND C2 22µF R1 200k R2 200k VOUT 1.2V/4A EFFICIENCY (%) Efficiency vs. Output...