TMI3258 600kHz, 18V, 3.0A Synchronous Step-Down Converter

PublishTime： 2020-11-23 Manufacturer： TOLL Type： Datasheet Language： English

The TMI3258 is a high efficiency 600kHz current mode constant on-time (CM-COT) control mode synchronous step-down DC-DC converter capable of delivering 3A current. TMI3258 integrates main switch and synchronous switch with very low R-DS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor size are achieved with 600kHz switching frequency. It adopts the CM-COT architecture to achieve fast transient responses for high voltage step down applications.
The TMI3258 requires a minimum number of readily available standard external components and is available in a space saving 6-pin SOT563 ROHS compliant package.
FEATURES:
●High Efficiency: Up to 93%(@3.3V)
●600kHz Frequency Operation
●Up to 3.0A Output Current
●Low R-DS(ON) for internal switches: 70mΩ/35mΩ (top/bottom)
●4.5V to 18V Input Voltage Range
●0.807V Reference
●Current mode COT controlto achieve fast transient responses
●Integrated internal compensation
●Stable with Low ESR Ceramic Output Capacitors
●Over Current Protection with Hiccup Mode
●Thermal Shutdown
●Inrush Current Limit and Soft Start
●Available in SOT563 Package

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