ADUM4472
PRODUCTIONIsolated Switch Regulator with Quad-Channel Isolators (2/2 Channel Directionality)
- Part Models
- 4
- 1ku List Price
- Starting From $5.48
Overview
- 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 1577
- VISO = 5000 V rms for 1 minute
- IEC / EN / CSA 62368-1
- IEC / CSA 60601-1
- IEC / CSA 61010-1
- DIN EN IEC 60747-17 (VDE 0884-17)
- VIORM = 645 V peak
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 power 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
Documentation
Data Sheet 1
User Guide 1
Informational 1
Safety and Regulatory Compliance 1
Video 1
Solutions Bulletin & Brochure 1
Safety and Regulatory Compliance 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADUM4472ARIZ | 20-Lead SOIC (Increased Creepage) | ||
| ADUM4472ARIZ-RL | 20-Lead SOIC (Increased Creepage) | ||
| ADUM4472CRIZ | 20-Lead SOIC (Increased Creepage) | ||
| ADUM4472CRIZ-RL | 20-Lead SOIC (Increased Creepage) |
| Part Models | 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 |
||
| ADUM4472ARIZ | PRODUCTION | |
| ADUM4472ARIZ-RL | PRODUCTION | |
| ADUM4472CRIZ | PRODUCTION | |
| ADUM4472CRIZ-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Evaluation Kits
ADUM4471 Evaluation Board