外接保護LB1224S-1W隔離電源
0.2~2W, SIP 7, Regulator Single Output DC/DC Converters
F Features
● Efficiency up to 80%
● 6000VDC/4000VAC Isolation
● MTBF > 2,000,000 Hours
● Short circuit protection
● Low Cost
● Input 5, 12, 15 and 24VDC
● Output 3.3,5,9,12,15,
● Temperature Performance -40℃~ +85℃
● UL 94V-0 Package Material
● Internal SMD Construction
● Industry Standard Pin out
Block Diagram
ABSOLUTE MAXIMUM RATINGS
| Short-circuit protection | Long time |
| Lead temperature 1.5mm from case for seconds | 300℃ |
| Internal power dissipation | 450mW |
| Input voltage Vin ,WRH05 types | 7V |
| Input voltage Vin ,WRH12 types | 15V |
| Input voltage Vin ,WRH15 types | 18V |
| Input voltage Vin ,WRH 24 types | 28V |
Model Selection Guide
| Model Number | Input Voltage | Input Current | Output Voltage | Output Current | Efficiency | |
| Max Load | No Load | | | Max Load | ||
| VDC | mA （typ） | mA（typ） | VDC | mA（max） | %（typ） | |
| 5（4.75~5.25） | 73 | 8 | 5 | 40 | 55 | |
| WRH0505S-W5 | 156 | 16 | 5 | 100 | 64 | |
| WRH0503S-1W | 245 | 27 | 3.3 | 260 | 70 | |
| WRH0505S-1W | 274 | 5 | 200 | 73 | ||
| WRH0512S-1W | 269 | 12 | 84 | 75 | ||
| WRH0515S-1W | 268 | 15 | 67 | 75 | ||
| WRH1203S-1W | 12（11.4~12.6） | 102 | 14 | 3.3 | 260 | 70 |
| WRH1205S-1W | 117 | 5 | 200 | 71 | ||
| WRH1212S-1W | 112 | 12 | 84 | 75 | ||
| WRH1215S-1W | 110 | 15 | 67 | 76 | ||
| WRH1503S-1W | 15（14.2~15.8） | 77 | 11 | 3.3 | 260 | 74 |
| WRH1505S-1W | 93 | 5 | 200 | 72 | ||
| WRH1512S-1W | 85 | 12 | 84 | 79 | ||
| WRH1515S-1W | 85 | 15 | 67 | 79 | ||
| WRH2403S-1W | 24（22.8~25.2） | 49 | 8 | 3.3 | 260 | 73 |
| WRH2405S-1W | 59 | 5 | 200 | 71 | ||
| WRH2412S-1W | 54 | 12 | 84 | 78 | ||
| WRH2415S-1W | 53 | 15 | 67 | 79 | ||
| WRH0503S-2W | 5（4.75~5.25） | 458 | 53 | 3.3 | 500 | 72 |
| WRH0505S-2W | 548 | 5 | 400 | 73 | ||
| WRH0512S-2W | 508 | 12 | 165 | 78 | ||
| WRH0515S-2W | 509 | 15 | 134 | 79 | ||
| WRH1203S-2W | 12（11.4~12.6） | 196 | 24 | 3.3 | 500 | 70 |
| WRH1205S-2W | 216 | 5 | 400 | 77 | ||
| WRH1212S-2W | 212 | 12 | 165 | 78 | ||
| WRH1215S-2W | 212 | 15 | 134 | 79 | ||
| WRH1503S-2W | 15（14.2~15.8） | 159 | 22 | 3.3 | 500 | 69 |
| WRH1505S-2W | 190 | 5 | 400 | 70 | ||
| WRH1512S-2W | 171 | 12 | 165 | 77 | ||
| WRH1515S-2W | 174 | 15 | 134 | 77 | ||
| WRH2403S-2W | 24（22.8~25.2） | 98 | 14 | 3.3 | 500 | 70 |
| WRH2405S-2W | 113 | 5 | 400 | 74 | ||
| WRH2412S-2W | 107 | 12 | 165 | 77 | ||
| WRH2415S-2W | 107 | 15 | 134 | 78 | ||
Input Specifications
| Parameter | Model | Min | Typ | Max | Unit |
| Input Voltage | 5 | 4.75 | 5 | 5.25 | VDC |
| 12 | 11.4 | 12 | 12.6 | ||
| 15 | 14.2 | 15 | 15.8 | ||
| 24 | 22.8 | 24 | 25.2 | ||
| Reverse Polarity Input Current | All models | | | 0.3 | A |
| Input Filter | Internal Capacitor | ||||
Output specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
| Output Voltage Accuracy | | ﹎ | ±1.0 | ±2.0 | % |
| Output Voltage Balance | Dual Output Balanced Loads | ﹎ | ±1.0 | ±2.0 | % |
| Line Regulation | For Vin Change of 1% | ﹎ | ±1.2 | ±1.5 | % |
| Load Regulation | Io＝20% to | | 1 | 2 | % |
| Ripple﹠Noise（20MHz） | 5~15V Output | ﹎ | 40 | 50 | mV P-P |
| Ripple﹠Noise（20MHz） | Over Line , Load﹠Temp | ﹎ | ﹎ | 100 | mV P-P |
| Ripple﹠Noise（20MHz） | | ﹎ | ﹎ | 10 | mV RMS |
| Over Load | | 120 | ﹎ | ﹎ | % |
| Temperature Coefficient | | ﹎ | ±0.01 | ±0.02 | %/℃ |
| Output Short Circuit | Long-time | ||||
General Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
| Isolation Voltage Rated | 60 Seconds | 6000 | ﹎ | ﹎ | VDC |
| Isolation Voltage Test | Flash Tested for 1 Second | 4500 | ﹎ | ﹎ | VAC |
| Isolation Resistance | 500VDC | 1000 | ﹎ | ﹎ | MΩ |
| Isolation Capacitance | 100KHz,1V | | 60 | 100 | PF |
| Switching Frequency | | 80 | 100 | 120 | KHz |
| MTBF | MIL-HDBK-217F@25℃,Ground benign | 2000 | ﹎ | ﹎ | K Hours |
| Parameter | Conditions | Min | Typ. | Max | Unit |
| Operating Temperature | Ambient | -40 | ﹎ | ＋85 | ℃ |
| Operating Temperature | Case | -40 | ﹎ | ＋90 | ℃ |
| Storage Temperature | ﹎ | -40 | ﹎ | ＋125 | ℃ |
| Humidity | ﹎ | ﹎ | ﹎ | 95 | % |
| Cooling | Free-Air Convection | ||||
Environmental Specifications
MECHANICAL DIMENSIONS TUBE OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS Pin Connection
| Pin | WRH Series |
| 1 | + Vin |
| 2 | -Vin |
| 4 | No Pin |
| 5 | -Vout |
| 6 | No Pin |
| 7 | +Vout |
Physical Characteristics
Case Size : 19.5×9.8×12.5mm Weight : 4.3g± 0.2g
