TMI3259

18V, Peak 4A, Synchronous COT Step-Down Converter

数据表

TMI3259_DS_EN_V0.1

产品详细信息

特性

说明

·60mΩ/30mΩ Low RDS(ON) internal FETs

·High Efficiency Synchronous-Mode Operation

·Wide Input Range: 4.5V to 18V

·Output Voltage from 0.8V

·520kHz Switch Frequency

·Up to 4A Output Current@1.2VOUT

·COT control to achieve fast transient responses

·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 SOT563 Package

The TMI3259 is a high efficiency 520kHz, Constant-on-Time (COT) control mode, synchronous step-down DC-DC converter capable of delivering up to Peak 4.0A current with 1.2V output voltage. TMI3259 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 520kHz switching frequency. It adopts the COT architecture to achieve fast transient responses for high voltage step down applications. The TMI3259 requires a minimum number of readily available standard external components and is available in a 6-pin SOT563 ROHS compliant package.