LTC3407-3
FEATURES
Dual Synchronous, 1.
8V/0.
8A and 3.
3V/0.
8A 2.
25MHz Step-Down DC/DC
Regulator
DESCRIPTION
n Very Low Quiescent Current: Only 40μA n 1.
8V at 800mA/3.
3V at 800mA n High Efficiency: Up to 95% n 2.
25MHz Constant Frequency Operation n High Switch Current: 1.
2A on Each Channel n No
Schottky Diodes Required n Low RDS(ON) Internal Switches: 0.
35Ω n VIN: 3.
3V to 5.
5V n Current Mode Operation for Excellent Line
and Load Transient Response n Short-Circuit Protected n Low Dropout Operation: 100% Duty Cycle n Ultralow Shutdown Current: IQ 1μA n Power-On Reset Output n Externally Synchronizable Oscillator n Small Thermally Enhanced 3mm × 3mm DFN Package
APPLICATIONS
n PDAs/Palmtop PCs...