The ADuM347x series is a family of four-channel isolated ICs that combine an isolated PWM controller with a transformer driver to drive an isolated DC/DC converter.
The ADuM347x series consists of four-channel digital isolators that integrate a PWM controller and a transformer driver to drive an isolated DC/DC converter. Based on Analog Devices' iCoupler technology, these devices provide a 2 W regulated isolated power supply ranging from 3.3 V to 24 V, eliminating the need for separate isolated converters in many designs.
The device features four independent isolation channels supporting data rates up to 25 Mbps (CRWZ grade) or 1 Mbps (ARWZ grade). It includes a soft-start function on power-up, pulse-by-pulse overcurrent protection, and thermal shutdown. The package is available in a 20-lead SSOP form factor with an operating temperature range up to 105 °C.
| Isolated Output Voltage (VISO) | 3.3 V to 24 V adjustable |
|---|---|
| Output Power | 2 W |
| Efficiency (Typical) | 70% |
| Isolation Voltage | 2500 V rms |
| Common Mode Transient Immunity | >25 kV/μs |
| Operating Temperature | -40°C to +105°C |
| Package Type | 20-lead SSOP |
| Switching Frequency Range | 200 kHz to 1 MHz |
The maximum output power is 2 W.
The devices can operate at temperatures up to 105 °C.
Yes, the devices integrate a PWM controller and transformer driver.