12VDC To 3.3VDC Automotive DC DC Converter Unregulated EN60950 1W
1W isolated DC-DC with Fixed Input Voltage; unregulated Single Output
Description
1. B_S-1WR2&B-D-1WR2 series is designed for use in distributed power supply systems and especially suitable in applications such as pure digital circuits,low frequency analog circuits,relay-driven circuits and data switching circuits,where:
2. The voltage of the input power supply is relatively stable with avariation of ±10% Vin or less;
3. An input to output isolation voltage of up to 1500VDC is necessary;
4. The requirement for a tight output regulation and low ripple&noise is not as strict.
FEATURES
- Continuous short-circuit protection
- High efficiency up to 80%
- Operating ambient temperature -40℃ to +105℃
- Compact SIP/DIP package
- Industry standard pin-out
- I/O isolation test voltage 1.5k VDC
- IEC60950, UL60950, EN60950 approval
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. | ||||
| -- | B0303S-1WR2 |
3.3 (2.97-3.63) |
3.3 | 303/30 | 68/72 |
220 |
| UL/CE/CB | B0305S-1WR2 | 5 | 200/20 | 72/76 | ||
| B0312S-1WR2 | 12 | 84/9 | 76/80 | |||
|
-- |
B0303D-1WR2 | 3.3 | 303/30 | 68/72 | ||
| B0305D-1WR2 | 5 | 200/20 | 72/76 | |||
| B0503S-1WR2 |
5 (4.5-5.5) |
3.3 | 303/30 | 68/72 | ||
|
UL/CE/CB |
B0505S-1WR2 | 5 | 200/20 | 76/80 | ||
| B0509S-1WR2 | 9 | 111/12 | 76/80 | |||
| B0512S-1WR2 | 12 | 84/9 | 76/80 | |||
| B0515S-1WR2 | 15 | 67/7 | 76/80 | |||
| B0524S-1WR2 | 24 | 42/4 | 76/80 | |||
| -- | B0503D-1WR2 | 3.3 | 303/30 | 68/72 | ||
|
UL/CE/CB |
B0505D-1WR2 | 5 | 200/20 | 76/80 | ||
| B0509D-1WR2 | 9 | 111/12 | 76/80 | |||
| B0512D-1WR2 | 12 | 84/9 | 76/80 | |||
| B0515D-1WR2 | 15 | 67/7 | 76/80 | |||
| B0524D-1WR2 | 24 | 42/4 | 76/80 | |||
| -- | B1203S-1WR2 |
12 (10.8-13.2) |
3.3 | 303/30 | 68/72 | |
|
UL/CE/CB |
B1205S-1WR2 | 5 | 200/20 | 76/80 | ||
| B1209S-1WR2 | 9 | 111/12 | 76/80 | |||
| B1212S-1WR2 | 12 | 84/9 | 76/80 | |||
| B1215S-1WR2 | 15 | 67/7 | 76/80 | |||
| B1224S-1WR2 | 24 | 42/4 | 76/80 | |||
| -- | B1203D-1WR2 | 3.3 | 303/30 | 68/72 | ||
|
UL/CE/CB |
B1205D-1WR2 | 5 | 200/20 | 76/80 | ||
| B1209D-1WR2 | 9 | 111/12 | 76/80 | |||
| B1212D-1WR2 | 12 | 84/9 | 76/80 | |||
| B1215D-1WR2 | 15 | 67/7 | 76/80 | |||
|
-- |
B1505S-1WR2 |
15 (13.5-16.5) |
5 | 200/20 | 76/80 |
220 |
| B1512S-1WR2 | 12 | 84/9 | 76/80 | |||
| B1515S-1WR2 | 15 | 67/7 | 76/80 | |||
|
-- |
B1505D-1WR2 |
15 (13.5-16.5) |
5 | 200/20 | 76/80 |
220 |
| B1509D-1WR2 | 9 | 111/12 | 76/80 | |||
| B1515D-1WR2 | 15 | 67/7 | 76/80 | |||
| B2403S-1WR2 |
24 (21.6-26.4) |
3.3 | 303/30 | 68/72 | ||
|
UL/CE/CB |
B2405S-1WR2 | 5 | 200/20 | 76/80 | ||
| B2409S-1WR2 | 9 | 111/12 | 76/80 | |||
| B2412S-1WR2 | 12 | 84/9 | 76/80 | |||
| B2415S-1WR2 | 15 | 67/7 | 76/80 | |||
| B2424S-1WR2 | 24 | 42/4 | 76/80 | |||
| -- | B2403D-1WR2 | 3.3 | 303/30 | 68/72 | ||
|
UL/CE/CB |
B2405D-1WR2 | 5 | 200/20 | 76/80 | ||
| B2409D-1WR2 | 9 | 111/12 | 76/80 | |||
| B2412D-1WR2 | 12 | 84/9 | 76/80 | |||
| B2415D-1WR2 | 15 | 67/7 | 76/80 | |||
| B2424D-1WR2 | 24 | 42/4 | 76/80 |
| Input Specifications | |||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit |
|
Input Current (full load / no-load) |
3.3V input | -- | 404/30 | --/70 |
mA |
| 5V input | -- | 277/20 | --/60 | ||
| 12V input | -- | 115/15 | --/50 | ||
| 15V input | -- | 83/10 | --/35 | ||
| 24V input | -- | 57/17 | --/30 | ||
| Reflected Ripple Current | -- | 15 | -- | mA | |
|
Surge Voltage (1sec. max.) |
3.3 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 | Filter capacitor | ||||
| Hot Plug |
Unavailable
|
||||
| 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 | -- |
| Other output | -- | -- | ±1.2 | |||
|
Load Regulation |
10%-100% load |
3.3VDC output | -- | 18 | -- |
% |
| 5VDC output | -- | 12 | -- | |||
| 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** |
B03xxS-1WR2/B03xxD-1WR2/B24xxS-1WR2/ B24xxD-1WR2/B0524S-1WR2/ B0524D-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. ** At the end of the short circuit duration, the supply voltage must be disconnected from following models: B03xxS-1WR2 / B03xxD-1WR2 series, B24xxS-1WR2/ B24xxD-1WR2 series, and B0524S-1WR2/B0524D-1WR2. |
||||||
| Mechanical Specifications | ||
| Case Material | Black plastic; flame-retardant and heat-resistant (UL94-V0) | |
| Dimensions | B_S-1WR2 series | 11.60 x 6.00 x 10.16 mm |
| B_D-1WR2 series | 12.70 x 10.16 x 8.20 mm | |
| Weight | B_S-1WR2 series | 1.3g (Typ.) |
| B_D-1WR2 series | 1.8g (Typ.) | |
| Cooling Method | Free air convection | |
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