描述 Description

The TMI3408F is a constant frequency 1.5MHz, peak current mode step-down converter with force PWM operation mode. The deviceintegrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. The output voltage can beregulated as low as 0.6V. The TMI3408F can also run at 100% duty cycle for low dropout operation, extending battery life in portablesystem. This device adopts peak current mode control and force PWM mode and has fast load transient response.

特性 Features

High Efficiency: Up to 96%(@3.3V)
1.5MHz Constant Frequency Operation
Force PWM Operation
1.2A Output Current
No Schottky Diode Required
2.5V to 5.5V Input Voltage Range
Output Voltage as Low as 0.6V
100% Duty Cycle in Dropout
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

應(yīng)用 Application

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