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| Part Number | LM317AT | LM317BT | LM317AH |
|---|---|---|---|
| Manufacturer | Texas Instruments | STMicroelectronics | National Semiconductor |
| Product Status | Not For New Designs | Active | Active |
| Output Configuration | Positive | Positive | Positive |
| Output Type | Adjustable | Adjustable | Adjustable |
| Number of Regulators | 1 | 1 | 1 |
| Voltage - Input (Max) | 40V | 40V | 40V |
| Voltage - Output (Min/Fixed) | 1.25V | 1.2V | 1.25V |
| Voltage - Output (Max) | 37V | 37V | 37V |
| Voltage Dropout (Max) | - | - | - |
| Current - Output | 1.5A | 1.5A | 1.5A |
| Current - Quiescent (Iq) | 10 mA | - | 10 mA |
| Current - Supply (Max) | - | - | - |
| PSRR | 80dB ~ 65dB (120Hz) | 80dB ~ 65dB (120Hz) | 80dB ~ 65dB (120Hz) |
| Control Features | - | - | - |
| Protection Features | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-220-3 | TO-220-3 | TO-205AD, TO-39-3 Metal Can |
| Supplier Device Package | TO-220-3 | TO-220 | TO-39-3 |
