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| Part Number | L4979D | L4979MD | L4989D | L4949D |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | onsemi |
| Product Status | Not For New Designs | Active | Obsolete | Obsolete |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Type | Fixed | Fixed | Fixed | Fixed |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Voltage - Input (Max) | 31V | 31V | 31V | 28V |
| Voltage - Output (Min/Fixed) | 5V | 5V | 5V | 5V |
| Voltage - Output (Max) | - | - | - | - |
| Voltage Dropout (Max) | 0.4V @ 150mA | 0.4V @ 150mA | 0.4V @ 150mA | 0.5V @ 100mA |
| Current - Output | 150mA | 150mA | 150mA | 100mA |
| Current - Quiescent (Iq) | 20 µA | 20 µA | 69 µA | 260 µA |
| Current - Supply (Max) | 3 mA | 3 mA | 2 mA | 5 mA |
| PSRR | 55dB (100Hz) | 55dB (100Hz) | 55dB (100Hz) | - |
| Control Features | Enable, Reset, Watchdog | Enable, Reset, Watchdog | Enable, Reset Output, Watchdog | Reset |
| Protection Features | Over Temperature, Short Circuit | Over Temperature, Short Circuit | Over Temperature, Short Circuit | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 150°C | -40°C ~ 150°C | -40°C ~ 150°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 20-SOIC (0.295", 7.50mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC | 20-SO | 8-SOIC | 8-SOIC |
