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ADUM4472:  Isolated Switch Regulator with Quad-Channel Isolators (2/2 Channel Directionality)

Product Details

Product Status:Recommended for New Designs

The ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474 are quad-channel, digital isolations with a regulated DC/DC isolated power supply controller with an internal MOSFET driver. The DC/DC controller has an internal isolated PWM feedback from the secondary side based on the iCoupler® chip scale transformer technology and complete loop compensation. This eliminates the need to use an optocoupler for feedback and compensates the loop for stability.

The ADuM447x isolator provides a more stable output voltage and higher efficiency compared to unregulated isolated DC/DC jpower supplies. The fully integrated feedback and loop compensation in a wide-body SOIC package provide a smaller form factor and 8.3 mm creepage distance solution. The regulated feedback provides a relatively flat efficiency curve over the full output power range. The ADuM3070 enables a DC/DC converter with a 3.3 V to 24 V isolated output voltage range from either a 5.0 V or a 3.3 V input voltage, with an output power of up to 2.5 W.

The ADuM447x isolators provide four independent isolation channels in a variety of channel configurations and data rates. (The x in ADuM447x throughout this data sheet stands for the ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474)

APPLICATIONS
  • Power supply startup bias and gate drives
  • Isolated sensor interfaces
  • Process controls
  • RS-232/RS-422/RS-485 transceivers

FEATURES and BENEFITS

  • For 2500 V rms isolation, please visit the ADuM3472 product page
  • Isolated PWM feedback with built in compensation
  • Primary side transformer driver for up to 2.5 W output power with 5 V input voltage
  • Regulated adjustable output:
    3.3 V to 24 V
  • Up to 80% efficiency
  • Quad dc-to-25 Mbps (NRZ) signal isolation channels
  • 200 kHz to 1 MHz adjustable oscillator
  • Soft start function at power-up
  • Pulse-by-pulse overcurrent protection
  • Thermal shutdown
  • 5000 V rms isolation
  • High common-mode transient immunity: >25 kV/µs
  • 20-lead SOIC package with
    8.3 mm creepage
  • High temperature operation:
    105°C

Functional Block Diagram for ADuM4472

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADUM4472 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADUM4472ARIZ Status: Production 20 ld SOIC (increased Creepage) 20 Ind Tube, 31 $5.13 $4.45 Y  Material Info Notify Me Purchase
ADUM4472ARIZ-RL Status: Production 20 ld SOIC (increased Creepage) 20 Ind Reel, 1000 - $4.45 Y  Material Info Notify Me Purchase
ADUM4472CRIZ Status: Production 20 ld SOIC (increased Creepage) 20 Ind Tube, 31 $6.41 $5.57 Y  Material Info Notify Me Purchase Sample
ADUM4472CRIZ-RL Status: Production 20 ld SOIC (increased Creepage) 20 Ind Reel, 1000 - $5.57 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADUM4471 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADUM4471EBZ Status: Production Evaluation Board $60.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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