STI3408B S10B SOT23-5 original

STI3408B S10B SOT23-5

original

FEATURES  High Efficiency: Up to 96%  1.5MHz Constant Frequency Operation  1.2A Output Current  No Schottky Diode Required  2.5V to 6.0V Input Voltage Range  Output Voltage as Low as 0.6V  100% Duty Cycle in Dropout  Low Quiescent Current: 40µ A  Slope Compensated Current Mode Control for Excellent Line and Load Transient Response  Short Circuit Protection  Thermal Fault Protection  Inrush Current Limit and Soft Start  Input over voltage protection(OVP)  <1µ A Shutdown Current  Tiny SOT23-5 Package

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