·130mΩ/65mΩ Low RDS(ON) internal FETs
·High Efficiency Synchronous-Mode Operation
·Wide Input Range:4.5V to 18V
·0.807V Reference Voltage
·Typical 800kHz Switch Frequency
·Up to 2A Output Current
·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 TMI3257I is a high efficiency, 800kHz switching frequency, Constant on-Time (COT) control mode synchronous step-down DC-DC converter capable of delivering up to 2A current with small size SOT563 package. TMI3257I 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 TMI3257I requires a minimum number of readily available standard external components and is available in a 6-pin small size SOT563 RoHS compliant package.
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