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

Smallest DSLR Power Solution Available

Product Details

Key Features

Parametric specs for Multifunction PMICs
VIN (V) (min) 4
VIN (V) (max) 14
# Step-Down Outputs 3
# Step-Up Outputs 1
VOUT (V) (min) 1
VOUT (V) (max) 27
Package/Pins TQFN/48
Budgetary
Price (See Notes)
0
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Simplified Block Diagram

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Parameters

Parametric specs for Multifunction PMICs
VIN (V) (min) 4
VIN (V) (max) 14
# Step-Down Outputs 3
# Step-Up Outputs 1
VOUT (V) (min) 1
VOUT (V) (max) 27
Package/Pins TQFN/48
Budgetary
Price (See Notes)
0

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

Applications/Uses

  • 2-Cell Li+ DVC
  • Digital SLR Cameras

Description

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.

Simplified Block Diagram

 

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .