Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Power | 1 W nominal |
| Input | 5 V nominal; 4.5 V to 5.5 V recommended |
| Output | Regulated 5 V single output |
| Regulation | Internal rectification plus LDO regulation |
| Isolation Test | 1000 VRMS for 1 second, operational isolation |
| Continuous Barrier Voltage | 60 VDC / 42.5 VAC operational limit |
| Switching / Protection | 400 kHz switching; short-circuit and thermal protection |
| Exact Package / Packing | SOP (DVB), 12 pins; 1000-piece large tape and reel |
Product Overview
DCR010505U/1K is a regulated 1 W isolated converter that generates a 5 V output from a nominal 5 V input. The internal transformer/rectifier stage is followed by regulation, giving a tighter output than the unregulated DCP02 family for isolated digital or mixed-signal rails.
The regulated output costs power capability: DCR01 is nominally 1 W while DCP020505 is a 2 W unregulated module. Selection therefore depends on whether the isolated load values regulation more than maximum available current.
Like DCP02, DCR01 provides operational isolation only. The 1 kVRMS one-second dielectric test and 60 VDC continuous barrier limit must not be interpreted as reinforced mains safety isolation.
For related devices, see HKEQGOO’s Isolated DC/DC Converters category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | DCR010505U/1K |
| Power | 1 W nominal |
| Input | 5 V nominal; 4.5 V to 5.5 V recommended |
| Output | Regulated 5 V single output |
| Regulation | Internal rectification plus LDO regulation |
| Isolation Test | 1000 VRMS for 1 second, operational isolation |
| Continuous Barrier Voltage | 60 VDC / 42.5 VAC operational limit |
| Switching / Protection | 400 kHz switching; short-circuit and thermal protection |
| Exact Package / Packing | SOP (DVB), 12 pins; 1000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | DCR010505U |
Functional Highlights
Internal regulation reduces dependence on isolated-side load
A regulated secondary is useful for digital interfaces and analog circuits that would otherwise need an extra post-regulator after an unregulated isolated module.
Regulation and isolation class are separate questions
A well-regulated output does not change the safety classification. DCR01 remains a functional/operational isolation product and should not be the sole protective barrier in a reinforced-isolation requirement.
Design Considerations
- Check the 1 W power budget at maximum temperature/load; do not substitute it solely by matching 5 V input/output labels.
- Treat the barrier as operational isolation and keep system safety isolation separate where required.
- Follow input/output capacitor and layout recommendations to minimize ripple and startup issues.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists DCR010505U/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 DCR010505U.
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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