描述 Description

The TMI3267 is a high efficiency 800kHz current mode constant on-time (CM-COT) control mode synchronous step-down DC-DC converter capable of delivering 2A current. TMI3267 integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor size are achieved with 800kHz switching frequency. It adopts the CM-COT architecture to achieve fast transient responses for high voltage step down applications. The TMI3267 requires a minimum number of readily available standard external components and is available in a space saving 6-pin SOT563 ROHS compliant package.

特性 Features

High Efficiency: Up to 93%(@3.3V)
800kHz Frequency Operation
Up to 2.0A Output Current
Low RDS(ON) for internal switches:90mΩ/45mΩ(top/bottom)
4.5V to 18V Input Voltage Range
0.6V Reference
Current mode COT control to achieve fasttransient responses
Integrated internal compensation
Stable with Low ESR Ceramic OutputCapacitors
Over Current Protection with Hiccup Mode
Thermal Shutdown
Inrush Current Limit and Soft Start
Available in SOT563 Package

應(yīng)用 Application

Digital Set Top BoxesFlat Panel Television and MonitorsNotebook computerWireless and DSL Modems