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| Part Number | LM431AIM3 | LM431AIMX | LM431CIM3 | LM431BIM3 | LM431AIM3X | LM431ACM3 | LM431AIM |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | Texas Instruments | National Semiconductor | National Semiconductor | Texas Instruments | National Semiconductor |
| Product Status | Not For New Designs | Active | Not For New Designs | Active | Obsolete | Obsolete | Active |
| Reference Type | Shunt | Shunt | Shunt | Shunt | Shunt | Shunt | Shunt |
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable |
| Voltage - Output (Min/Fixed) | 2.495V | 2.5V | 2.5V | 2.495V | 2.495V | 2.495V | 2.495V |
| Voltage - Output (Max) | 37 V | 36 V | 37 V | 37 V | 37 V | 37 V | 37 V |
| Current - Output | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA |
| Tolerance | ±2.2% | ±2% | -0.6%, +0.4% | - | ±2.2% | ±2.2% | ±2.2% |
| Temperature Coefficient | 50ppm/°C Typical | 50ppm/°C Typical | 50ppm/°C Typical | 50ppm/°C Typical | 50ppm/°C Typical | 50ppm/°C Typical | 50ppm/°C Typical |
| Noise - 0.1Hz to 10Hz | - | - | - | - | - | - | - |
| Noise - 10Hz to 10kHz | - | - | - | - | - | - | - |
| Voltage - Input | - | - | - | - | - | - | - |
| Current - Supply | - | - | - | - | - | - | - |
| Current - Cathode | 1 mA | 1 mA | 1 mA | 1 mA | 1 mA | 1 mA | 1 mA |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | 8-SOIC (0.154", 3.90mm Width) | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | SOT-23-3 | 8-SOIC | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | 8-SOIC |
