The FR9209 is a synchronous step-down DC/DC converter with capacitor-current-sense constant on time (CCS-COT) mode control. The device provides 12A continuous load current capability. Adjustable switching frequency, 600kHz, 800kHz, or 1000kHz, the FR9209 provides both forced CCM or pulse skip mode to support high efficiency and reduce power loss.
The FR9209 fault protection includes cycle-by-cycle current limit, short circuit protection, UVLO, thermal shutdown, programmable soft-start function prevents inrush current at turn-on and internal power good function indicates the output is within its nominal voltage range.
The FR9209 use CCS constant on time control that provides fast transient response, the noise immunity and all kinds of very low ESR output capacitor for ensuring performance stabilization.
The FR9209 is offered in TQFN-21 (3mm×4mm) package, which provides good thermal conductance.