·80mΩ/40mΩ Low RDS(ON) internal FETs
·High Efficiency Synchronous-Mode Operation
·Wide Input Range:4.5V to 18V
·Output Voltage from 0.805V
·1MHz Switch Frequency
·Up to 3A 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 TMI3278H is a high efficiency 1MHz, Constant on-Time (COT) control mode synchronous stepdown DC-DC converter capable of delivering up to 3A current. TMI3278H 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 TMI3278H requires a minimum number of readily available standard external components and is available in a 6-pin SOT563 ROHS compliant package.
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