UCC33420 - 1.5W Isolated DC/DC Module | Texas Instruments
MPN: UCC33420 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for UCC33420 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
UCC33420QRAQRQ1
β Drop-Inπ Reference alternative (not in catalog)
UCC33420RAQR
β Drop-Inπ Reference alternative (not in catalog)
UCC34141-Q1
β Drop-Inβ In Stock
$5.5 / Unit
View Datasheet βUCC12050
β Drop-Inπ Reference alternative (not in catalog)
UCC33020QWRHBRQ1
β Drop-Inβ In Stock
$3.1 / Unit
View Datasheet βUCC33420 Maximum Ratings & Electrical Characteristics
| Output Power | 1.5 W |
| Input Voltage Range | 4.5 V to 5.5 V |
| Output Voltage | 5.0 V or 5.5 V (selectable) |
| Output Current | 300 mA (at 5.0V) |
| Isolation Rating | 3 kVRMS |
| Load Regulation | 0.5% typical |
| Line Regulation | 4 mV/V typical |
| Package | VSON (4.00mm Γ 5.00mm) |
| Package Height | 1.00 mm |
| Clearance and Creepage | >4.1 mm |
| Enable Pin | Yes, with fault reporting |
| Short Circuit Protection | Yes |
| Thermal Shutdown | Yes |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
UCC33420 Pin Configuration
| Pin 1 | VIN β Input supply voltage |
| Pin 2 | GND β Ground |
| Pin 3 | EN/FLT β Enable and fault reporting |
| Pin 4 | VOUT β Regulated output voltage |
| Pin 5 | VOSEL β Output voltage select |
| Pin 6 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
UCC33420 is suitable for 6 applications: Isolated IGBT/SiC Gate Driver Power, Industrial Fieldbus Transceivers, Isolated Sensor Interfaces, Automotive Isolated Power, Medical Device Isolation, Isolated Power for Communication Interfaces.
Isolated IGBT/SiC Gate Driver Power
The UCC33420 provides isolated power for IGBT and SiC gate drivers, ensuring reliable switching in industrial motor drives and power converters. Its 3kVRMS isolation and 1.5W output are sufficient for gate drive circuits, while the low-profile VSON package saves board space. The selectable 5.0V/5.5V output matches gate driver supply requirements, and the enable pin allows for power sequencing and fault reporting.
Recommended
Industrial Fieldbus Transceivers
The UCC33420 powers isolated fieldbus transceivers in industrial automation, providing galvanic isolation to prevent ground loops and protect against voltage transients. Its 3kVRMS isolation meets industrial safety standards, and the 5.0V output is compatible with common transceiver supply voltages. The integrated protection features enhance system reliability in harsh environments.
Recommended
Isolated Sensor Interfaces
The UCC33420 provides isolated power to sensor interfaces in industrial and medical applications, ensuring accurate signal transmission without ground noise. Its low EMI and excellent load regulation maintain stable output for sensitive sensors. The compact VSON package is ideal for space-constrained designs, and the enable pin allows for power management.
Recommended
Automotive Isolated Power
The UCC33420-Q1 variant is designed for automotive applications, providing isolated power for battery management systems, on-board chargers, and motor drives. Its AEC-Q100 qualification ensures reliability in harsh automotive environments. The 3kVRMS isolation and 1.5W output are suitable for various automotive subsystems, and the small package saves valuable PCB space.
Recommended
Medical Device Isolation
The UCC33420 provides isolated power for medical devices, ensuring patient safety through galvanic isolation. Its 3kVRMS isolation meets medical safety standards, and the low EMI is critical for sensitive medical electronics. The compact package and integrated protection features make it suitable for portable and wearable medical devices.
Recommended
Isolated Power for Communication Interfaces
The UCC33420 powers isolated communication interfaces such as RS-485, CAN, and Ethernet, providing galvanic isolation to prevent ground loops and protect against surges. Its 5.0V output is compatible with common transceiver supplies, and the 3kVRMS isolation ensures robust communication in industrial environments. The enable pin allows for power sequencing in multi-rail systems.
Recommended
Recommended Products Summary
Engineering reference data for UCC33420 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | UCC33420QRAQRQ1 | UCC33420RAQR | UCC34141-Q1 | UCC12050 | UCC33020QWRHBRQ1 |
|---|---|---|---|---|---|---|
| Package | VSON (4.00mm Γ 5.00mm) | VSON (4.00mm Γ 5.00mm) | VSON (4.00mm Γ 5.00mm) | VSON (4.00mm Γ 5.00mm) | VSON (4.00mm Γ 5.00mm) | VSON (4.00mm Γ 5.00mm) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Power | 1.5 W | 1.5 W | 1.5 W | [DATA_NEEDED] | [DATA_NEEDED] | 1.0 W |
| Isolation Rating | 3 kVRMS | 3 kVRMS | 3 kVRMS | [DATA_NEEDED] | [DATA_NEEDED] | 5 kVRMS |
| Input Voltage Range | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | [DATA_NEEDED] | [DATA_NEEDED] | 3.0V to 5.5V |
| Output Voltage | 5.0V or 5.5V | 5.0V or 5.5V | 5.0V or 5.5V | [DATA_NEEDED] | [DATA_NEEDED] | 3.3V |
| Automotive Grade | No | Yes (AEC-Q100) | No | Yes (AEC-Q100) | No | Yes (AEC-Q100) |
| Enable Pin | Yes | Yes | Yes | [DATA_NEEDED] | [DATA_NEEDED] | Yes |
Key Differentiators
- Integrated transformer technology (vs UCC12050)
- Automotive grade option (vs UCC33420RAQR)
- Higher output power than UCC33020 (vs UCC33020QWRHBRQ1)
Design Notes
For optimal isolation performance, maintain the recommended clearance and creepage distances (>4.1mm) on the PCB. Place input and output capacitors close to the respective pins to minimize parasitic inductance and ensure stable operation. Use a solid ground plane on both sides of the isolation barrier, but avoid bridging the barrier with copper traces.
The UCC33420 dissipates power internally, so ensure adequate thermal management. The VSON package has an exposed pad that should be soldered to a thermal via array connected to a copper pour for heat spreading. For 1.5W output, the power dissipation is moderate, but in high ambient temperatures, derating may be necessary.
Do not exceed the input voltage range of 5.5V, as this can damage the device. Ensure the output voltage selection pin (VOSEL) is correctly configured for the desired output (5.0V or 5.5V). The enable pin (EN/FLT) has a maximum input current of 10uA; do not exceed this to avoid false fault reporting.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 qualification applies to the Q1 variant.
