1W isolated DC-DC converter Fixed input voltage, unregulated single
output
Description
B_XT-1WR2 series are specially designed for applications where an
isolated voltage is required in a distributed power supply
system.They are suitable for
1. Where the voltage of the input power supply is stable(voltage
variation:±10%Vin);
2. Where isolation between input and output is necessary(isolation
voltage≤1500VDC);
3. Where the output voltage regulation and the ripple&noise of
the output voltage is not strictly required;
4. Typical application:digit circuit condition;normal low-frequency
artificial circuit condition;relay drive circuit condition, etc.
FEATURES
Continuous short-circuit protection
Operating ambient temperature range: -40℃ to +105℃
Compact SMD package
I/O isolation test voltage 1.5k VDC
Internal surface mounted design
No extra components required
Industry standard pin-out
IEC62368, UL60950, EN60950 approved
Specifications
| Selection Guide |
Certification |
Part No. | Input Voltage (VDC) | Output | Full Load Efficiency (%) Min./Typ. | Capacitive Load(µF) Max. |
| Nominal (Range) | Voltage (VDC) | Current(mA) Max./Min. |
| CE | B0303XT-1WR2 |
3.3 (2.97-3.63) | 3.3 | 303/30 | 65/69 |
220 |
| UL/CE | B0305XT-1WR2 | 5 | 200/20 | 70/74 |
| -- | B0309XT-1WR2 | 9 | 111/12 | 76/80 |
CE | B0312XT-1WR2 | 12 | 84/9 | 76/80 |
| B0315XT-1WR2 | 15 | 67/7 | 76/80 |
| B0324XT-1WR2 | 24 | 42/4 | 76/80 |
UL/CE | B0503XT-1WR2 |
5 (4.5-5.5) | 3.3 | 303/30 | 68/72 |
| B0505XT-1WR2 | 5 | 200/20 | 76/80 |
| B0506XT-1WR2 | 6 | 167/17 | 76/80 |
| B0509XT-1WR2 | 9 | 111/12 | 76/80 |
| B0512XT-1WR2 | 12 | 84/9 | 76/80 |
| B0515XT-1WR2 | 15 | 67/7 | 76/80 |
| B0524XT-1WR2 | 24 | 42/4 | 76/80 |
| B1203XT-1WR2 |
12 (10.8-13.2) | 3.3 | 303/30 | 68/72 |
| B1205XT-1WR2 | 5 | 200/20 | 76/80 |
| B1209XT-1WR2 | 9 | 111/12 | 76/80 |
| B1212XT-1WR2 | 12 | 84/9 | 76/80 |
| B1215XT-1WR2 | 15 | 67/7 | 76/80 |
| CE | B1224XT-1WR2 | 24 | 42/4 | 76/80 |
| B1505XT-1WR2 |
15 (13.5-16.5) | 5 | 200/20 | 76/80 |
| -- | B1509XT-1WR2 | 9 | 111/12 | 76/80 |
| CE | B1515XT-1WR2 | 15 | 67/7 | 76/80 |
| -- | B2403XT-1WR2 |
24 (21.6-26.4) | 3.3 | 303/30 | 67/71 |
| UL/CE | B2405XT-1WR2 | 5 | 200/20 | 76/80 |
| UL/CE/CB | B2409XT-1WR2 | 9 | 111/12 | 76/80 |
| CE | B2412XT-1WR2 | 12 | 84/9 | 76/80 |
UL/CE | B2415XT-1WR2 | 15 | 67/7 | 76/80 |
| B2424XT-1WR2 | 24 | 42/4 | 76/80 |
| Input Specifications |
| Item | Operating Conditions | Min. | Typ. | Max. | Unit |
Input Current (full load / no-load) | 3.3V input | -- | 404/25 | --/70 |
mA |
| 5V input | -- | 250/20 | --/60 |
| 12V input | -- | 104/15 | --/50 |
| 15V input | -- | 82/10 | --/35 |
| 24V input | -- | 52/7 | --/30 |
| Reflected Ripple Current | | -- | 15 | -- | mA |
Surge Voltage (1sec. max.) | 3.3V input | -0.7 | -- | 5 |
VDC |
| 5V input | -0.7 | -- | 9 |
| 12V input | -0.7 | -- | 18 |
| 15V input | -0.7 | -- | 21 |
| 24V input | -0.7 | -- | 30 |
| Input Filter | | Capacitance filters |
| Hot Plug | | Unavailable |
| Output Specifications |
| Item | Operating Conditions | Min. | Typ. | Max. | Unit |
| Voltage Accuracy | | See output regulation curve (Fig. 1) |
| Linear Regulation | Input voltage change: ±1% | 3.3VDC output | -- | -- | ±1.5 | -- |
| Others | -- | -- | ±1.2 |
Load Regulation |
10%-100% load | 3.3VDC output | -- | 18 | -- |
% |
| 5VDC output | -- | 12 | -- |
| 6VDC output | -- | 10 | -- |
| 9VDC output | -- | 8 | -- |
| 12VDC output | -- | 7 | -- |
| 15VDC output | -- | 6 | -- |
| 24VDC output | -- | 5 | -- |
| Ripple & Noise* | 20MHz bandwidth | -- | 60 | 150 | mVp-p |
| Temperature Coefficient | Full load | -- | -- | ±0.03 | %/℃ |
| Short-circuit Protection** | B03xxXT-1WR2/B24xxXT-1WR2/ B0524XT-1WR2 | -- | -- | 1 | s |
| Others | Continuous, self-recovery |
Notes: * The “parallel cable” method is used for Ripple and Noise
test, please refer to DC-DC Converter Application Notes for
specific information; ** Supply voltage must be discontinued at the end of short-circuit
duration for B03xxXT-1WR2 series, B24xxXT-1WR2 series, and
B0524XT-1WR2 model. |
| Mechanical Specifications |
| Case Material | Black epoxy resin; flame-retardant and heat-resistant (UL94 V-0) |
| Dimensions | 12.70 x 11.20 x 7.25 mm |
| Weight | 1.6g(Typ.) |
| Cooling Method | Free air convection |
