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| Part Number | L4938ED | L4938EPD | L4938ND | L4938E |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Active | Obsolete | Obsolete |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Type | Adjustable (Fixed) | Adjustable (Fixed) | Adjustable (Fixed) | Adjustable (Fixed) |
| Number of Regulators | 2 | 2 | 2 | 2 |
| Voltage - Input (Max) | 28V | 28V | 25V | 28V |
| Voltage - Output (Min/Fixed) | 4.9V (5V) | 4.9V (5V) | 5V, Tracking | 4.9V (5V) |
| Voltage - Output (Max) | 5.1V | 5.1V | - | 5.1V |
| Voltage Dropout (Max) | 0.4V @ 100mA, 0.6V @ 400mA | 0.4V @ 100mA, 0.6V @ 400mA | 0.4V @ 50mA, 0.6V @ 500mA | 0.4V @ 100mA, 0.6V @ 400mA |
| Current - Output | 100mA, 400mA | 100mA, 400mA | 50mA, 500mA | 100mA, 400mA |
| Current - Quiescent (Iq) | - | - | - | - |
| Current - Supply (Max) | - | - | - | - |
| PSRR | - | - | - | - |
| Control Features | Enable, Reset | Enable, Reset | Enable, Reset | Enable, Reset |
| Protection Features | Over Temperature | Over Temperature | Over Temperature, Short Circuit | Over Temperature |
| Operating Temperature | -40°C ~ 150°C | -40°C ~ 150°C | -40°C ~ 125°C | -40°C ~ 150°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.433", 11.00mm Width) Exposed Pad | 20-SOIC (0.295", 7.50mm Width) | 16-DIP (0.346", 8.80mm) |
| Supplier Device Package | 20-SO | PowerSO-20 | 20-SO | 16-PowerDIP (20x7.10) |
