SUNTO STI3408B
1.2A Synchronous Step-Down Converter
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
APPLICATIONS
● Cellular and Smart Phones● Wireless and DSL Modems
● PDA/MID/PAD
● Digital Still and Video Cameras
GENERAL DESCRIPTION
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 run