Synchronous step-down DC/DC converter operates from a 2.25 V to 5.5 V input supply and delivers up to 3 A output current. The regulator uses constant-frequency peak current mode control with a programmable 1 MHz to 3 MHz switching frequency and a 22 ns minimum on-time. Silent Switcher architecture reduces EMI, while Burst Mode, pulse-skip, and forced-continuous operation support efficiency and low-noise use cases. The output adjusts from 0.5 V to the input voltage with ±1% output-voltage accuracy over temperature. Protection and control features include power good, internal compensation, soft start, output overvoltage protection, short-circuit protection, thermal shutdown, clock synchronization, and up to 100% duty-cycle operation.
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| Topology | Synchronous step-down |
| Input Voltage Min | 2.25V |
| Input Voltage Max | 5.5V |
| Output Current | 3A |
| Output Voltage Min | 0.5V |
| Output Voltage Max | VIN |
| Switching Frequency Min | 1MHz |
| Switching Frequency Max | 3MHz |
| Minimum On-Time | 22ns |
| Output Voltage Accuracy | ±1 over temperature% |
| Quiescent Current in Burst Mode | 40µA |
| Shutdown Current | 1µA |
| Enable Threshold | 400mV |
| NMOS On-Resistance | 8mΩ |
| PMOS On-Resistance | 31mΩ |
| Control Mode | Peak current mode |
| Operating Modes | Forced continuous, pulse skip, Burst Mode |
| Qualification | AEC-Q100 qualified for automotive applications |
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