Rainbow-electronics MAX1585 User Manual

General DescriptionThe MAX1584/MAX1585 provide a complete power-supply solution for slim digital cameras. They improveperformance, component count, an

MAX1584/MAX15855-Channel Slim DSC Power Supplies10 ______________________________________________________________________________________Pin Descripti

MAX1584/MAX15855-Channel Slim DSC Power Supplies______________________________________________________________________________________ 11Pin Descripti

MAX1584/MAX15855-Channel Slim DSC Power Supplies12 ______________________________________________________________________________________Detailed Desc

MAX1584/MAX15855-Channel Slim DSC Power Supplies______________________________________________________________________________________ 13MAX1585OSCCCS

MAX1584/MAX15855-Channel Slim DSC Power Supplies14 ______________________________________________________________________________________PVSU2.35V1VON

MAX1584/MAX15855-Channel Slim DSC Power Supplies______________________________________________________________________________________ 15Step-Down DC-

MAX1584/MAX15855-Channel Slim DSC Power Supplies16 ______________________________________________________________________________________OSC cycles, t

MAX1584/MAX15855-Channel Slim DSC Power Supplies______________________________________________________________________________________ 17to drive an N

MAX1584/MAX1585end of the soft-start interval. If PVSU is dragged belowthe input, the overload is supplied by the body diode ofthe internal synchronou

iary converters and cannot be activated until PVSU is inregulation. For automatic startup, connect ON_ to PVSUor a logic level greater than 1.6V.Desig

MAX1584/MAX15855-Channel Slim DSC Power Supplies2 _______________________________________________________________________________________ABSOLUTE MAXI

MAX1584/MAX1585IIND(PK)= 1.25 x IOUT / (1 - D)Inductance values smaller than LIDEALcan be used toreduce inductor size; however, if much smaller values

If ZESR> fC, it can be ignored, as is typically the casewith ceramic output capacitors. If ZESRis less than fC,it should be cancelled with a pole s

MAX1584/MAX1585Significant MOSFET selection parameters are as fol-lows:• On-resistance (RDS(ON))• Maximum drain-to-source voltage (VDS(MAX))• Total ga

If ZCOUT is not less than ZRHP/ 10 (as is typical withceramic output capacitors) and continuous conductionis required, then cross the loop over before

MAX1584/MAX1585MAX1585 AUX2 Inverter Compensation,Discontinuous Inductor CurrentIf the load current is very low (40mA or less), discontin-uous current

Transformerless Inverter for Negative CCDBias (AUX2, MAX1585)On the MAX1585, AUX2 is set up to drive an external P-channel MOSFET in an inverting conf

MAX1584/MAX1585Adding a MAX1801 SlaveThe MAX1801 is a 6-pin SOT slave DC-DC controllerthat can be connected to generate additional outputvoltages. It

The MAX1801 controller operation and design are simi-lar to that of the MAX1584/MAX1585 AUX controllers.All comments in the AUX Controller ComponentSe

MAX1584/MAX1585event of an overload. Or, it can remove the load untilthe supply reaches regulation, effectively allowing full-load startup. Figure 15

MAX1584/MAX15855-Channel Slim DSC Power SuppliesMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in

MAX1584/MAX15855-Channel Slim DSC Power Supplies_______________________________________________________________________________________ 3ELECTRICAL CH

MAX1584/MAX15855-Channel Slim DSC Power Supplies4 _______________________________________________________________________________________ELECTRICAL CH

MAX1584/MAX15855-Channel Slim DSC Power Supplies_______________________________________________________________________________________ 5 PARAMETER C

MAX1584/MAX15855-Channel Slim DSC Power Supplies6 _______________________________________________________________________________________ PARAMETER C

MAX1584/MAX15855-Channel Slim DSC Power Supplies_______________________________________________________________________________________ 7STEP-UP EFFIC

MAX1584/MAX15855-Channel Slim DSC Power Supplies8 _______________________________________________________________________________________NO-LOAD INPUT

MAX1584/MAX15855-Channel Slim DSC Power Supplies_______________________________________________________________________________________ 9AUX1 STARTUP