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| Part Number | LM238K | LM138K | LM237K |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Obsolete | Obsolete |
| Output Configuration | Positive | Positive | Negative |
| Output Type | Adjustable | Adjustable | Adjustable |
| Number of Regulators | 1 | 1 | 1 |
| Voltage - Input (Max) | 35V | 35V | 40V |
| Voltage - Output (Min/Fixed) | 1.2V | 1.2V | -1.2V |
| Voltage - Output (Max) | 32V | 32V | -37V |
| Voltage Dropout (Max) | - | - | - |
| Current - Output | 5A | 5A | 1.5A |
| Current - Quiescent (Iq) | - | - | - |
| Current - Supply (Max) | - | - | - |
| PSRR | 75dB ~ 60dB (120Hz) | 75dB ~ 60dB (120Hz) | 77dB ~ 60dB (120Hz) |
| Control Features | - | - | - |
| Protection Features | Over Current, Over Temperature | Over Current, Over Temperature | Over Temperature, Short Circuit |
| Operating Temperature | -25°C ~ 150°C | -55°C ~ 150°C | -25°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-204AA, TO-3 | TO-204AA, TO-3 | TO-204AA, TO-3 |
| Supplier Device Package | TO-3 | TO-3 | TO-3 |
