Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Power | 2 W nominal |
| Input | 5 V nominal; 4.5 V to 5.5 V recommended |
| Output | 5 V single output; unregulated |
| Rated Output Current | 400 mA design-example rating |
| Isolation Test | 1000 VRMS for 1 second, operational isolation |
| Continuous Barrier Voltage | 60 VDC / 42.5 VAC maximum stated operational limit |
| Protection / Control | Thermal and short-circuit protection; synchronization support |
| Exact Package / Packing | SOP (DVB), 12 pins; 1000-piece large tape and reel |
Product Overview
DCP020505U/1K is a compact 2 W isolated DC/DC module for creating a floating 5 V rail from a regulated 5 V input. Its output is unregulated, so load variation and input tolerance must be acceptable to the downstream circuitry or followed by additional regulation.
The most important selection boundary is isolation class. TI explicitly identifies DCP02 isolation as operational/functional isolation and warns against using it as the safety-isolation element of a system requiring reinforced isolation. The 1 kVRMS one-second hipot value is a production barrier test, not a continuous mains-working-voltage rating.
The /1K suffix identifies the 1000-piece large tape-and-reel SOP-12 option. The module’s integrated transformer and switching stage simplify isolated signal/interface power where SELV-level barrier conditions are appropriate.
For related devices, see HKEQGOO’s Isolated DC/DC Converters category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | DCP020505U/1K |
| Power | 2 W nominal |
| Input | 5 V nominal; 4.5 V to 5.5 V recommended |
| Output | 5 V single output; unregulated |
| Rated Output Current | 400 mA design-example rating |
| Isolation Test | 1000 VRMS for 1 second, operational isolation |
| Continuous Barrier Voltage | 60 VDC / 42.5 VAC maximum stated operational limit |
| Protection / Control | Thermal and short-circuit protection; synchronization support |
| Exact Package / Packing | SOP (DVB), 12 pins; 1000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | DCP020505U |
Functional Highlights
2 W and 5 V output provide a simple isolated local rail
At the stated 400 mA design rating, the module can power isolated interface-side logic, amplifiers or transceivers without a discrete transformer controller.
Unregulated output must be treated as a load-dependent supply
DCP02 is not the regulated counterpart. If ADC reference accuracy, logic tolerance or analog headroom requires a tight 5 V rail, downstream regulation or the DCR regulated family may be a better fit.
Design Considerations
- Do not use the 1 kVRMS one-second test as evidence of reinforced safety isolation.
- Use the recommended low-ESR input/output capacitors close to the module to control startup and ripple.
- Budget output variation across load and input tolerance before connecting precision analog circuitry directly.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists DCP020505U/1K as Active / Production; SOP (DVB), 12 pins; 1000-piece large tape and reel; Level-3-260C-168 HR; −40°C to +85°C; marking DCP020505U.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
