KHC Power Technology Co.,Ltd
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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
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. | ||||
|
-- | B0303D-1WR3 | 3.3 (2.97-3.63) | 3.3 | 303/30 | 75/79 | 2400 |
| B0305D-1WR3 | 5 | 200/20 | 78/82 | 2400 | ||
| Input Specifications | ||||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit | |
| Input Current (full load / no-load) |
3.3VDC input | 3.3VDC output | -- | 384/12 | 405/-- |
mA |
| 5VDC output | -- | 370/12 | 389/-- | |||
| Reflected Ripple Current * | -- | 30 | -- | |||
| Surge Voltage(1sec. max.) | -0.7 | -- | 5 | VDC | ||
| Input Filter | Capacitance filter | |||||
| Hot Plug | Unavailable | |||||
| Note: * Reflected ripple current testing method please see DC-DC Converter Application Notes for specific operation. | ||||||
| Output Specifications | ||||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit | |
| Voltage Accuracy | See output regulation curves (Fig. 1) | |||||
|
Linear Regulation | Input voltage change: ±1% | 3.3VDC output | -- | -- | ±1.5 |
-- |
| 5VDC output | -- | -- | ±1.2 | |||
|
Load Regulation |
10%-100% load | 3.3VDC output | -- | 13 | 20 |
% |
| 5VDC output | -- | 11 | 15 | |||
| Ripple & Noise* | 20MHz bandwidth | -- | 50 | 100 | mVp-p | |
| Temperature Coefficient | Full load | -- | ±0.02 | -- | %/℃ | |
| Short-Circuit Protection | 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. | ||||||
| Mechanical Specifications | |
| Case Material | Black plastic; flame-retardant and heat-resistant (UL94V-0) |
| Dimensions | 12.70 x 10.16 x 8.20 mm |
| Weight | 1.8g (Typ.) |
| Cooling Method | Free air convection |
