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| Part Number | L4981B | L4981BD | L4985B | L4986B | L4981A |
|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Active | Active | Active | Obsolete |
| Mode | Average Current | Average Current | Continuous Conduction (CCM) | Continuous Conduction (CCM) | Average Current |
| Frequency - Switching | 100kHz | 100kHz | 130kHz | 130kHz | 100kHz |
| Current - Startup | 100 µA | 100 µA | 400 µA | 400 µA | 100 µA |
| Voltage - Supply | 14.5V ~ 19.5V | 14.5V ~ 19.5V | 10V ~ 24.5V | 10V ~ 24.5V | 14.5V ~ 19.5V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 125°C |
| Mounting Type | Through Hole | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-SOIC (0.295", 7.50mm Width) | 8-SOIC (0.154", 3.90mm Width) | 10-SOP (0.154", 3.90mm Width) | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-DIP | 20-SO | 8-SO | 10-SSOP | 20-DIP |
