General DescriptionThe MAX1710/MAX1711 step-down controllers areintended for core CPU DC-DC converters in notebookcomputers. They feature a triple-thr

MAX1710/MAX1711/MAX1712rent-mode PWMs while also avoiding the problemscaused by widely varying switching frequencies in con-ventional constant-on-time

IBIAS= ICC+ f ✕(QG1+ QG2) = 15mA to 30mA (typ)where ICCis 600µA (typ), f is the switching frequency,and QG1and QG2are the MOSFET data sheet totalgate-

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input voltage don’t exceed the package ratings or violatethe overall thermal budget. Choose a low-side MOSFET (Q2) that has the lowestpossible RDS(ON)

fy factors that influence the turn-on and turn-off times.These factors include the internal gate resistance, gatecharge, threshold voltage, source ind

MAX1710/MAX1711/MAX1712High-Speed, Digitally AdjustedStep-Down Controllers for Notebook CPUsminimize the energy transferred from inductor to capaci-to

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MAX1710/MAX1711/MAX1712High-Speed, Digitally AdjustedStep-Down Controllers for Notebook CPUsIRF7805OUTPUT+1.5V AT 15A10x220µF4VOS-CON2 x IRF7805CMPSH3

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• Keep the high-current paths short, especially at theground terminals. This practice is essential for stable,jitter-free operation.• Connect GND and

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MAX1710/MAX1711/MAX1712High-Speed, Digitally AdjustedStep-Down Controllers for Notebook CPUsMaxim cannot assume responsibility for use of any circuitr

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10µs/divLOAD-TRANSIENT RESPONSE(WITH INTEGRATOR)VIN = 15V, VO = 1.6V, IO = 0A TO 7AA = VOUT, AC-COUPLED, 50mV/divB = INDUCTOR CURRENT, 5A/divABMAX1710

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