1 Features

• 1.5W Maximum Output Power

• 4.5V to 5.5V input voltage operation range

• 5.0V, 5.5V regulated selectable output voltage

– 5.0V: 300mA available load current

• Robust isolation barrier:

– Isolation rating: 3kVRMS

– Surge capability: 6.5kVPK

– Working voltage: 1188VPK

– 200V/nS common mode transient immunity

• Power dense isolated DC/DC module with

integrated transformer technology

• Adaptive spread spectrum modulation (SSM)

• Meets CISPR32 Class B emission

• Strong magnetic fields immunity

• Overload and short circuit protection

• Thermal shutdown

• Low inrush current soft-start

• Enable pin with fault reporting mechanism

• Planned Safety-related certifications:

– Basic isolation per DIN EN IEC 60747-17 (VDE

0884-17)

– 3kVRMS isolation for 1 minute per UL 1577

– UL certification per IEC 62368-1, and IEC

60601-1 end equipment standards

– CQC approval per GB4943.1-2022

• Extended temperature range: –40°C to 125°C

• VSON-12 (4.00mm × 5.00mm) package

2 Applications

• Factory automation PLC modules

• EV charging infrastructure

• Isolated power for voltage and current sensors

• Isolated bias power for digital isolators

• Isolated bias power for RS-485, RS-422 and CAN

3 Description

UCC33420 is an industrial DC/DC power module with

integrated transformer technology designed to provide

1.5W of isolated output power. It can support an input

voltage operation range of 4.5V to 5.5V and regulate

5.0V output voltage with a selectable headroom of

5.5V.

UCC33420 features a proprietary transformer

architecture that achieves a 3kVRMS isolation rating,

while simultaneously supporting low EMI and

excellent load regulation.

The UCC33420 integrates protection features for

increased system robustness such as enable pin with

fault reporting mechanism, short circuit protection and

thermal shutdown.

The UCC33420 comes in a miniaturized, low-profile

solution VSON (4.00mm × 5.00mm) package with

1.00mm height and > 4.2mm creepage and clearance