Two-phase synchronous step-down DC/DC controller drives dual N-channel MOSFET power stages for a single-output PolyPhase regulator. The controller operates from a 4.5 V to 38 V input range and uses a 0.6 V reference with ±0.75% accuracy. A phase-lockable current-mode architecture supports 250 kHz to 770 kHz switching, RSENSE or inductor DCR current sensing, and programmable DCR temperature compensation. Remote output sensing is provided by an integrated differential amplifier, and operation modes include Burst Mode, continuous operation, and Stage Shedding.
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| Controller topology | Synchronous step-down PolyPhase |
| Output configuration | Single output, dual channel |
| Input voltage range | 4.5 to 38V |
| Reference voltage | 0.6V |
| Reference voltage accuracy | ±0.75% |
| Maximum efficiency | 95% |
| Switching frequency range | 250 to 770kHz |
| Output voltage range without differential amplifier | 0.6 to 5V |
| Output voltage range with differential amplifier | 0.6 to 3.3V |
| MOSFET drive | Dual N-channel synchronous |
| Current sensing | RSENSE or inductor DCR |
| DCR temperature compensation | Programmable |
| Remote sense | True remote sense differential amplifier |
| Operating modes | Burst Mode, continuous, Stage Shedding |
| Soft-start and tracking | Adjustable soft-start or VOUT tracking |
| Maximum stackable phases | Up to 12 |
| Package options | 32-pin QFN 5 mm × 5 mm; 38-pin TSSOP |
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