TMI3253SH数据手册Tollsemi中文资料规格书

描述 Description

The TMI3253SH is a high efficiency 1MHz, Constant-on-Time (COT) control mode synchronous step-down DC-DC converter capable of delivering up to 3.0A current with 1.2V output voltage. TMI3253SH 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 1MHz switching frequency. It adopts the COT architecture to achieve fast transient responses for high voltage step down applications.The TMI3253SH requires a minimum number of readily available standard external components and is available in a 6-pin SOT23-6 ROHS compliant package.

特性 Features

. 70mΩ/35mΩ Low RDS(ON) internal FETs. High Efficiency Synchronous-ModeOperation. Wide Input Range: 4.5V to 18V. Output Voltage from 0.6V. 1MHz Switch Frequency. Up to 3.0A Output Current@1.2VOUT. COT control to achieve fast transientresponses. Power Save Mode at Light Load. Integrated internal compensation. Stable with Low ESR Ceramic Output Capacitors. Over Current Protection with Hiccup Mode. Thermal Shutdown. Inrush Current Limit and Soft Start. Build in Input Over Voltage Protection. Available in SOT23-6 Package(2)

应用 Application

. Digital Set Top Boxes. Flat Panel Television and Monitors. Notebook computer. Wireless and DSL Modems