TMI3257N

800kHz 18V 2A Synchronous COT Step-Down Converter

数据表

TMI3257N_DS_EN_V1.0

产品详细信息

特性

说明

 Wide Input Voltage Range: 4.5V to 18V

 Output Voltage Range: 0.807V to 7V

 Reference Voltage: 0.807V±1.5%

 High Efficiency Synchronous-Mode Operation

 800kHz Switch Frequency

 Up to 2A Output Current

 Low RDS(ON) for Internal switches: 130mΩ/65mΩ(top/bottom)

 Advanced 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 DFN1.6x1.6 Package

The TMI3257N is a high efficiency 800kHz, Advanced Constant-on-time (COT) control mode synchronous step-down DC-DC converter capable of delivering up to 2A current. TMI3257N 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 COT architecture to achieve fast transient responses for high voltage step down applications. The TMI3257N requires a minimum number of readily available standard external components and is available in a 6-pin DFN1.6mmx1.6mm ROHS compliant package.