Overview
The ADUM3472WARSZ-RL7, produced by Analog Devices Inc., is a quad-channel digital isolator with an integrated PWM controller and transformer driver. This device utilizes Analog Devices' iCoupler® technology to provide isolated, regulated power and signal isolation. It is designed to eliminate the need for a separate isolated dc-to-dc converter in many applications, offering a compact and efficient solution for various industrial and automotive uses.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Isolated Output Voltage | VISO | 3.0 | 3.3 | 3.6 | V | IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 |
| Feedback Voltage Setpoint | VFB | 1.125 | 1.25 | 1.375 | V | IISO = 0 mA |
| Line Regulation | VISO (LINE) | 1 | 10 | mV/V | IISO = 50 mA | |
| Output Power | 2 W | At 3.3 V to 24 V output | ||||
| Efficiency at Maximum Output Supply Current | 70 % | IISO = 400 mA, VISO = 5.0 V | ||||
| Switching Frequency | fSW | 200 kHz | 1 MHz | Adjustable oscillator frequency | ||
| Common-Mode Transient Immunity | >25 kV/µs | |||||
| Operating Temperature | 105°C | Maximum |
Key Features
- Integrated PWM controller and transformer driver for isolated dc-to-dc converter.
- Quad dc-to-25 Mbps (NRZ) signal isolation channels.
- 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.
- Adjustable oscillator frequency: 200 kHz to 1 MHz.
- Soft start function at power-up.
- Pulse-by-pulse overcurrent protection and thermal shutdown.
- High common-mode transient immunity: >25 kV/µs.
- High temperature operation: up to 105°C.
- 20-lead SSOP package.
- Safety and regulatory approvals: UL recognition, CSA Component Acceptance Notice #5A, VDE certificate of conformity.
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 interfaces (CAN, Audio, Ethernet).
Q & A
- What is the ADUM3472WARSZ-RL7 used for? The ADUM3472WARSZ-RL7 is used for providing isolated, regulated power and signal isolation in various industrial and automotive applications.
- What is the output power of the ADUM3472WARSZ-RL7? The device provides up to 2 W of regulated, isolated power.
- What are the output voltage ranges of the ADUM3472WARSZ-RL7? The output voltage can be adjusted from 3.3 V to 24 V.
- What is the efficiency of the ADUM3472WARSZ-RL7 at maximum output supply current? The efficiency is 70% at a guaranteed load of 400 mA at 5.0 V output.
- What is the switching frequency range of the ADUM3472WARSZ-RL7? The switching frequency is adjustable from 200 kHz to 1 MHz.
- Does the ADUM3472WARSZ-RL7 have overcurrent protection? Yes, it features pulse-by-pulse overcurrent protection and thermal shutdown.
- What is the common-mode transient immunity of the ADUM3472WARSZ-RL7? The device has a high common-mode transient immunity of >25 kV/µs.
- What are the safety and regulatory approvals for the ADUM3472WARSZ-RL7? It has UL recognition, CSA Component Acceptance Notice #5A, and VDE certificate of conformity.
- What is the maximum operating temperature of the ADUM3472WARSZ-RL7? The maximum operating temperature is 105°C.
- In what package is the ADUM3472WARSZ-RL7 available? It is available in a 20-lead SSOP package.
