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The RT6224A/B is a high-efficiency, monolithic synchronous step-down DC-DC converter that can deliver up to 3.5A output peak current from a 4.3V to 18V input supply. The RT6224A/B adopts ACOTTM architecture to allow the transient response to be improved and keep in constant frequency. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Fault conditions also include output under-voltage protection, output over-voltage protection, and thermal shutdown.
Small Output Voltage at Light Load
High-Side Over-Current Limit
Integrated 90mΩ/45mΩ MOSFETs
4.3V to 18V Supply Voltage Range
500kHz Switching Frequency
ACOTTM Control
0.6V ±1.5% Voltage Reference
Monotonic Start-Up into Pre-Biased Outputs
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