MAX8682:Smallest 6-Channel, 2-Cell Li+ PMIC for Digital SLR Cameras

Smallest DSLR Power Solution Available

The MAX8682 power-management IC (PMIC) provides a compact and complete power-supply solution for Digital Single-Lens Reflex (DSLR) cameras. Six DC-DC converters with internal switches provide up to 94% efficiency to generate the critical power-supply voltages required in DSLR camera systems. The two H-bridge and three step-down DC-DC converters are internally compensated and switch only as necessary at light loads to optimize efficiency. The H-bridge channels utilize Maxim’s proprietary H-bridge topology, providing a seamless transition through all operating modes without the glitches commonly seen in competing H-bridge converters. All six converters offer True Shutdown™ short-circuit protection, and overload protection. To prevent current runaway in the event of a hard short, channels 1 and 2 latch off immediately if the output voltage drops below 1.25V anytime after startup. The white LED step-up converter provides regulated current and dimming control. If a short-circuit condition is detected on the output capacitor of the white LED converter, only this converter turns off. If a short or overload condition is detected on any other output for at least 66ms, the PMIC turns off all converters.

Key Features
  • 4V to 14V Input Voltage Range
  • Internal MOSFET H-Bridge Converters for Up to 94% Efficiency
  • Minimal Output Ripple Variation on H-Bridge Converters
  • No Mode Transition Glitches on Proprietary H-Bridge
  • Internal Compensation on Channels 1–5
  • Fast Line-Transient and Load-Transient Response
  • True Shutdown on All Converters
  • Internal Soft-Start and Short-Circuit Protection on All Outputs
  • Individual ON/OFF Control
  • Fault Blanking
  • ±2% Regulated LED Current for Six White LEDs
  • 2% Switching Frequency Accuracy
  • 3µA Shutdown Current
  • Small, 48-Pin 6mm x 6mm TQFN Package
  • 2-Cell Li+ DVC
  • Digital SLR Cameras
Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesLCD/LED/Flash/CCD FeaturesInterface TypeVIN
Oper. Freq.
ShutdownCurrent Limit
Fixed Freq./PWM
Internal Switch
Soft Start
Sync. Rectifier
White LEDGPIO4141271.51.51000TQFN/48
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8682ETM+Custom OrderTQFN,;48 pin;37.2 mm²-40°C to +85°CLead Free
MAX8682ETM+TCustom OrderTQFN,;48 pin;37.2 mm²-40°C to +85°CLead Free
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