TMI3408C数据手册Tollsemi中文资料规格书

描述 Description

The TMI3408C 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 TMI3408C 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.

特性 Features

· High Efficiency: Up to 96%· 1.5MHz Constant Frequency Operation· Up to 1.5A Output Current(@Vout=1.2V)· No Schottky Diode Required· 2.5V to 5.5V Input Voltage Range· Output Voltage as Low as 0.6V· 100% Duty Cycle in Dropout· Low Quiescent Current: 50µA· 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)· <1µA Shutdown Current· SOT23-5 Package(2)

应用 Application

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