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| Part Number | VIPER12AS-E | VIPER22AS-E | 
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | 
| Product Status | Active | Active | 
| Output Isolation | Non-Isolated | Isolated | 
| Internal Switch(s) | Yes | Yes | 
| Voltage - Breakdown | 730V | 730V | 
| Topology | - | Flyback | 
| Voltage - Start Up | 14.5 V | 14.5 V | 
| Voltage - Supply (Vcc/Vdd) | 9V ~ 38V | 8V ~ 38V | 
| Duty Cycle | - | - | 
| Frequency - Switching | 60kHz | 60kHz | 
| Power (Watts) | 8 W | 7 W | 
| Fault Protection | Current Limiting, Over Temperature, Over Voltage | Current Limiting, Over Temperature, Over Voltage | 
| Control Features | - | - | 
| Operating Temperature | -40°C ~ 150°C (TC) | -40°C ~ 150°C (TC) | 
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | 8-SOIC | 8-SOIC | 
| Mounting Type | Surface Mount | Surface Mount |