· Integrated 4-switch for high efficient synchronous Buck-Boost co♕nverter
· Input bulk capacitance discharging during power swap atℱ V🀅PIN pin
· Input voltage operating r🥂ange from 4V to 23V&nbsꦏp;
·&nbꦐsp;Adjustable switc🐽hing frequency: 300kHz~500kHz
· Internal fixed soft-start time
·&n𒐪bsp;Internal 🍷high voltage bias regulator with bypass switch
· Selectable🐭 FCCM or DCM with pulse skipping
· Cycle-by-cycle current limit
· Up to 4A average inductor current
· Output over-voltage protection
· Thermal shutdown
· QFN-28 package, 4mm×4mm
The TMI2605S integrates a synchronous 4-switch Buck-Boost converter that maintains output voltage regulation when the input voltage is either less than or greater than the output voltage. It operates as a Buck converter while the input voltage is sufficiently greater than the output voltage and gradually transitions to the Buck-Boost mode as the input voltage approaches t🅷he output. It also features an internal fixed soft-start function and offers protection features including input UVLO, OCP, overload protection (OLP), OVP and thermal shutdown. In addition, it features selectable FCCM or DCM operation for light load. 🔯;
The TMI2605S also control two low N-MOSFETs as load switches helping to reduce BOM cost. With ♐a micro-proce🍌ssor, it can realize input bulk capacitance discharging during power swap at VPIN pin.
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