拓尔微产品规格书TMI3255S.pdf

TMI3255S 600kHz, 18V, 5A Synchronous COT Step-Down Converter Features Description ⚫ 39mΩ/20mΩ Low RDS(ON) internal FETs The TMI3255S is a high efficiency, Constant on- ⚫ High Efficiency Synchronous-Mode Time (COT) control mode synchronous step-down Operation DC-DC converter capable of delivering up to 5A current. TMI3255S integrates main switch and ⚫ Wide Input Range: 4.5V to 18V synchronous switch with very low RDS(ON) to ⚫ Feedback Voltage Accuracy 0.6V±1.5% minimize the conduction loss. Low output voltage ⚫ 600kHz Switch Frequency Typical ripple and small external inductor and capacitor ⚫ Up to 5A Output Current size are achieved with typical 600kHz switching ⚫ COT control to achieve fast transient frequency. It adopts the COT architecture to responses achieve fast transient responses for high voltage ⚫ Power Save Mode at Light Load step down applications. ⚫ Integrated internal compensation The TMI3255S requires a minimum number of ⚫ Stable with Low ESR Ceramic Output readily available standard external components Capacitors