Overview
The ADUM3471ARSZ is a digital isolator produced by Analog Devices Inc., utilizing the iCoupler® technology. This device integrates a PWM controller and a transformer driver, providing a compact and efficient solution for isolated power and signal isolation. It is designed to offer up to 2 W of regulated, isolated power with adjustable output voltages ranging from 3.3 V to 24 V. The ADUM3471ARSZ is particularly useful in applications requiring high efficiency, small form factor, and robust isolation.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage | 3.0 V | - | 5.5 V | V | - |
| Isolated Output Voltage | 3.0 V | 3.3 V | 3.6 V | V | IISO = 0 mA |
| Output Power | - | - | 2 W | - | - |
| Efficiency | - | 70% | - | - | At guaranteed load of 400 mA at 5.0 V output |
| Operating Temperature | -40°C | - | 105°C | °C | - |
| No. of Channels | - | - | 4 Channels | - | - |
| Package Type | - | - | SSOP | - | - |
Key Features
- Integrated PWM controller and transformer driver for isolated dc-to-dc converter
- Regulated adjustable output: 3.3 V to 24 V
- Up to 2 W output power
- 70% efficiency at guaranteed load of 400 mA at 5.0 V output
- Quad dc-to-25 Mbps (NRZ) signal isolation channels
- High temperature operation: up to 105°C
- High common-mode transient immunity: >25 kV/µs
- 200 kHz to 1 MHz adjustable oscillator frequency
- Soft start function at power-up
- Pulse-by-pulse overcurrent protection and thermal shutdown
Applications
- RS-232/RS-422/RS-485 transceivers
- Industrial field bus isolation
- Power supply start-up bias and gate drives
- Isolated sensor interfaces
- Process controls
- Automotive applications
Q & A
- What is the primary function of the ADUM3471ARSZ? The ADUM3471ARSZ is a digital isolator that integrates a PWM controller and a transformer driver for an isolated dc-to-dc converter.
- What are the output voltage ranges of the ADUM3471ARSZ? The output voltage can be adjusted from 3.3 V to 24 V.
- What is the maximum output power of the ADUM3471ARSZ? The maximum output power is up to 2 W.
- What is the efficiency of the ADUM3471ARSZ at a guaranteed load? The efficiency is 70% at a guaranteed load of 400 mA at 5.0 V output.
- How many signal isolation channels does the ADUM3471ARSZ have? It has four dc-to-25 Mbps (NRZ) signal isolation channels.
- What is the operating temperature range of the ADUM3471ARSZ? The operating temperature range is from -40°C to 105°C.
- What type of package does the ADUM3471ARSZ come in? It comes in a 20-lead SSOP package.
- Does the ADUM3471ARSZ have any safety and regulatory approvals? Yes, it has UL recognition, CSA Component Acceptance Notice, and VDE certificate of conformity.
- What are some common applications of the ADUM3471ARSZ? Common applications include RS-232/RS-422/RS-485 transceivers, industrial field bus isolation, power supply start-up bias and gate drives, isolated sensor interfaces, process controls, and automotive applications.
- Does the ADUM3471ARSZ have overcurrent protection and thermal shutdown features? Yes, it includes pulse-by-pulse overcurrent protection and thermal shutdown features.
