STI3453 1MHz, 18V, 3.0A Synchronous Step-Down Converter

2020-11-27 TOLL
The STI3453 is a high efficiency 1MHz current mode constant on-time (CM-COT) control mode synchronous step-down DC-DC converter capable of delivering 3A current. STI3453 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 1MHz switching frequency. It adopts the CM-COT architecture to achieve fast transient responses for high voltagestep down applications.
The STI3453 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)
⚫1MHz Frequency Operation
⚫Up to 3.0A Output Current@1.2V-OUT
⚫Low R-DS(ON) for internal switches:70mΩ/35mΩ(top/bottom)
⚫4.5V to 18V Input Voltage Range
⚫0.805V 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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