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| Part Number | LM137K | LM138K | LM237K | LM117K | LM137H |
|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Obsolete | Obsolete | Active | Active |
| Output Configuration | Negative | Positive | Negative | Positive | Negative |
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable |
| Number of Regulators | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Max) | 40V | 35V | 40V | 40V | -40V |
| Voltage - Output (Min/Fixed) | -1.2V | 1.2V | -1.2V | 1.25V | -1.2V |
| Voltage - Output (Max) | -37V | 32V | -37V | 37V | -37V |
| Voltage Dropout (Max) | - | - | - | - | - |
| Current - Output | 1.5A | 5A | 1.5A | 1.5A | 1.5A |
| Current - Quiescent (Iq) | - | - | - | - | - |
| Current - Supply (Max) | - | - | - | - | - |
| PSRR | 77dB ~ 60dB (120Hz) | 75dB ~ 60dB (120Hz) | 77dB ~ 60dB (120Hz) | 80dB ~ 65dB (120Hz) | 66dB (120Hz) |
| Control Features | - | - | - | - | - |
| Protection Features | Over Current, Over Temperature | Over Current, Over Temperature | Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C | -25°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 150°C |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-204AA, TO-3 | TO-204AA, TO-3 | TO-204AA, TO-3 | TO-204AA, TO-3 | TO-205AD, TO-39-3 Metal Can |
| Supplier Device Package | TO-3 | TO-3 | TO-3 | TO-3-2 | TO-3 |
