SOT23-5

The STI3408B is a constant frequency, current
mode PWM step-down converter. The
device integrates a main switch and a
synchronous rectifier for high efficiency
without an external Schottky diode. It is ideal
for powering portable equipment that runs
from a single cell Lithium-Ion (Li+) battery. The
output voltage can be regulated as low as
0.6V. The STI3408B can also run at 100%
duty cycle for low dropout operation, extending
battery life in portable system. This device
offers two operation modes, PWM control and
PFM Mode switching control, which allows a
high efficiency over the wider range of the
load

Cellular and Smart Phones
 Wireless and DSL Modems
 PDA/MID/PAD
 Digital Still and Video Cameras