MP2321 Datasheet | Monolithic Power Systems

DESCRIPTION The MP2321 is a fully-integrated, highefficiency, synchronous, step-down, switchmode converter with 40μA of quiescent current. The MP2321 achieves 2A of continuous output current over a wide input supply range with excellent load and line regulation and can operate with high efficiency over a wide output current load range. The MP2321 is optimized for battery-operated applications and applications requiring high light-load efficiency. With constant-on-time (COT) control, the MP2321 provides very fast transient response, easy loop design, and very tight output regulation. Full protection features include short-circuit protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown. The MP2321 requires a minimal number of readily available, standard, external ponents and is available in a space-saving QFN-14 (2mmx3mm) package. FEATURES - 4V to 19V Operating Input Range - 2A Output Current - 40μA Quiescent Current - Output Adjustable from 0.6V - 110mΩ/40mΩ High-Side/Low-Side RDS(ON) for Internal Power MOSFETs - Power Good Indicator - Programmable Soft-Start Time - Forced PWM or Auto PFM/PWM Mode Selectable - Programmable Switching Frequency - Thermal Shutdown - Short-Circuit Protection: Hiccup Mode - Available in a QFN-14 (2mmx3mm) Package APPLICATIONS - Tablet PCs - Solid State Drives - Gaming - Battery-Operated Applications 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” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 100 90 80 70 60 50 40 30 20 10 0 0.001 0.01 0.1 MP2321 Rev. 1.1 .Monolithic Power. 5/24/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. - 19V, 2A, LOW IQ, STEP-DOWN CONVERTER ORDERING INFORMATION Part Number-...