RT6254B Datasheet | Richtek

Reference Sample & Design Buy ® RT6254A/B 4A, 18V, 500kHz, ACOT® Step-Down Converter General Description The RT6254A/B is a high-performance, synchronous stepdown DC-DC converter that can deliver up to 4A output current from a 4.5V to 18V input supply. The device integrates low RDS(ON) power MOSFETs, accurate 0.6V reference and an integrated diode of bootstrap circuit to offer a very pact solution. The RT6254A/B adopts Advanced Constant On-Time (ACOT®) control architecture that provides ultrafast transient response and further reduces the externalponent count. In steady states, the ACOT® operates in nearly constant switching frequency over line, load and output voltage ranges...