MAX1584:5-Channel Slim DSC Power Supplies

Highest Efficiency, Smallest, Five-Channel Slim Digital Still Camera Power Supply

The MAX1584/MAX1585 provide a complete power-supply solution for slim digital cameras. They improve performance and lower component count and size compared to conventional multichannel controllers in 2-cell AA, 1-cell Li+, and dual-battery designs. On-chip MOSFETs provide up to 95% efficiency for critical power supplies, while additional channels operate with external FETs for optimum design flexibility. The MAX1584/MAX1585 include five high-efficiency DC-DC conversion channels: Step-up DC-DC converter with on-chip FETs Step-down DC-DC converter with on-chip FETs Three PWM DC-DC controllers for CCD, LCD, LED, or other functions The step-down DC-DC converter can operate directly from the battery or from the step-up output, providing boost-buck capability with a compound efficiency of up to 90%. Both devices include three PWM DC-DC controllers: the MAX1584 includes two step-up controllers and one step-down controller, while the MAX1585 includes one step-up controller, one inverting controller, and one step-down controller. All DC-DC channels operate at one fixed frequency—settable from 100kHz to 1MHz—to optimize size, cost, and efficiency. Other features include soft-start, power-OK outputs, and overload protection. The MAX1584/MAX1585 are available in space-saving, 32-pin thin QFN packages. An evaluation kit is available to expedite designs.

Key Features
  • Step-Up DC-DC Converter, 95% Efficient
  • Step-Down DC-DC Converter
    • Operate from Battery for 95% Efficient Step-Down
    • 90% Efficient Boost-Buck with Step-Up
  • Three Auxiliary PWM DC-DC Controllers
  • No Transformers (MAX1585)
  • Up to 1MHz Operating Frequency
  • 1mA Shutdown Mode
  • Internal Soft-Start Control
  • Overload Protection
  • Compact 32-Pin Thin QFN Package (5mm x 5mm)
MAX1584, MAX1585: Functional Diagram
MAX1584, MAX1585: Functional Diagram
  • Digital Cameras
  • PDAs
titleDownload file
MAX1584-MAX1585 Data SheetMAX1584-MAX1585.pdf
Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesLCD/LED/Flash/CCD FeaturesVIN
Oper. Freq.
Inverting OutputsPackage/PinsBudgetary
minmaxminmaxSee Notes
Low Batt./POK Output
Adj. Frequency
Current Limit
Fixed Freq./PWM
Internal Switch
Soft Start
Sync. Rectifier
CCD Bias
TFT Bias$2.61 @1k
Design kits & evaluation modules
Related Products
  • MAX1566:Six-Channel, High-Efficiency, Digital Camera Power Supplies
  • MAX1567:Six-Channel, High-Efficiency, Digital Camera Power Supplies
  • MAX1565:Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply
  • MAX1801:Digital-Camera Step-Up Slave DC-DC Controller
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1584ETJNo Longer AvailableMAX1584ETJ+TQFN,;32 pin;26 mm²-40°C to +85°CNo
MAX1584ETJ+ActiveTQFN,;32 pin;26 mm²-40°C to +85°CLead Free
MAX1584ETJ+TActiveTQFN,;32 pin;26 mm²-40°C to +85°CLead Free
MAX1584ETJ-TNo Longer AvailableMAX1584ETJ+TQFN;32 pin-40°C to +85°CSee data sheet
MAX1584-MAX1585.pdf MAX1585
功能框图 MAX1585