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 components 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