KHC Power Technology Co.,Ltd
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1W isolated DC-DC converter Fixed input voltage, unregulated single output
Description
B03_S-1WR3 series are specially designed for applications where an isolated voltage is required in a distributed power supply system.They are suitable for:pure digital circuits,low frequency analog circuits,relay-driven circuits and data switching circuits.
FEATURES
Continuous short-circuit protection
No-load input current as low as 10mA
Operating ambient temperature range: -40℃ to +105℃
High efficiency up to 85%
I/O isolation test voltage: 1.5k VDC
Industry standard pin-out
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-1WR3 | 3.3 (2.97-3.63) | 3.3 | 303/30 | 75/79 | 2400 |
| B0305S-1WR3 | 5 | 200/20 | 78/82 | 2400 | ||
| B0309S-1WR3 | 9 | 111/11 | 81/85 | 1000 | ||
| B0312S-1WR3 | 12 | 83/8 | 78/82 | 560 | ||
| B0315S-1WR3 | 15 | 67/7 | 78/82 | 560 | ||
| B0324S-1WR3 | 24 | 42/4 | 80/84 | 220 | ||
| Input Specifications | ||||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit | |
Input Current (full load / no-load) |
3.3VDC input | 3.3VDC output | -- | 384/10 | 405/-- |
mA |
| Others output | -- | 370/18 | 389/-- | |||
| Reflected Ripple Current* | -- | 15 | -- | |||
| Surge Voltage(1sec. max.) | 3.3VDC input | -0.7 | -- | 5 | VDC | |
| Input Filter | Capacitance filter | |||||
| Hot Plug | Unavailable | |||||
| Note: * Refer to DC-DC Converter Application Notes for detailed description of reflected ripple current test method. | ||||||
| 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 |
-- |
| Others output | -- | -- | 1.2 | |||
Load Regulation |
10%-100% load | 3.3VDC output | -- | 12 | 18 | |
| Others output | -- | 8 | 15 | |||
Ripple & Noise* | 20MHz bandwidth | 3.3VDC/5VDC/9VDC/12VD C/15VDC output | -- | 30 | 75 |
mVp-p |
| 24VDC output | -- | 50 | 100 | |||
| 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 (UL94 V-0) |
| Dimensions | 11.60 x 6.00 x 10.16 mm |
| Weight | 1.3g (Typ.) |
| Cooling Method | Free air convection |
