Datasheet Summary
1.25A, 4MHz, Synchronous Step-Down DC/DC Converter
Features n High Efficiency: Up to 95% n VIN Range: 2.5V to 5.5V n High Frequency Operation: Up to 4MHz n Selectable Low Ripple (Typical 25mVp-p)
Burst Mode® Operation: IQ = 40µA n Stable with Ceramic Capacitors n Uses Tiny Capacitors and Inductor n Low RDS(ON) Internal Switches: 0.15Ω n Current Mode Operation for Excellent Line and Load Transient Response n Short-Circuit Protected n Low Dropout Operation: 100% Duty Cycle n Low Shutdown Current: IQ ≤ 1µA n Output Voltages from 0.6V to 5V n Synchronizable to External Clock n Supports Pre-Biased Outputs n Small 10-Lead (3mm × 3mm) DFN or MSOP Package
APPLICATIONS n Notebook puters...