ADUM4470
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ADUM4470

Isolated Switch Regulator with Quad-Channel Isolators (4/0 Channel Directionality)

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $4.76
Features
  • 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
  • Safety and regulatory approvals
    • UL recognition: 5000 V rms for 1 minute per UL 1577
    • CSA certification per IEC 62368-1, IEC 61010-1, and IEC 60601-1
    • VDE certificate of conformity
      • VDE V 0884-10
      • VIORM = 849 V peak
Additional Details
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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
Part Models 4
1ku List Price Starting From $4.76

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADUM4470ARIZ
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ADUM4470ARIZ-RL
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ADUM4470CRIZ
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ADUM4470CRIZ-RL
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Product Lifecycle

PCN

Sep 22, 2015

- 15_0135

Alternate Assembly Site of Select Isolator Products in 8L/16L SOIC_N, 16L/20L SOIC_W and 16L/20L SOIC_IC at ASE Chungli

ADUM4470ARIZ

PRODUCTION

ADUM4470ARIZ-RL

PRODUCTION

ADUM4470CRIZ

PRODUCTION

ADUM4470CRIZ-RL

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Sep 22, 2015

- 15_0135

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Alternate Assembly Site of Select Isolator Products in 8L/16L SOIC_N, 16L/20L SOIC_W and 16L/20L SOIC_IC at ASE Chungli

ADUM4470ARIZ

PRODUCTION

ADUM4470ARIZ-RL

PRODUCTION

ADUM4470CRIZ

PRODUCTION

ADUM4470CRIZ-RL

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-ADUM4471

ADUM4471 Evaluation Board

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EVAL-ADUM4471

ADUM4471 Evaluation Board

ADUM4471 Evaluation Board

Product Detail

The EVAL-ADuM4471EBZ board can be used for different applications of the ADuM447x iCoupler isolated switching regulators. With the ability to be configured as a circuit with either single- (default) or double-supply output, the board supports a variety of input/output configurations and multiple transformer options. It is equipped with an ADuM4471 switching regulator (ADuM4471ARIZ) for voltage isolation, but can also be used with ADuM4470ARIZ, ADuM4472ARIZ, ADuM4473ARIZ, or ADuM4474ARIZ. The regulator features integrated feedback and a switching frequency that can be set from 200 kHz to 1000 kHz.

The user guide provides all the necessary details to set up and use the EVAL-ADuM4471EBZ board. Although the EVAL-ADuM4471EBZ comes with the ADuM4471 switching regulator on board, the printed circuit board (PCB) is designed for compatibility with the entire ADuM447x family. Additional information about the supported iCoupler devices is available in the ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474 data sheet, which should be consulted in conjunction with this user guide when using the EVAL-ADuM4471EBZ board.

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