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| Part Number | LM2594MX-12 | LM2594M-12 | 
|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | 
| Product Status | Obsolete | Active | 
| Function | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Buck | Buck | 
| Output Type | Fixed | Fixed | 
| Number of Outputs | 1 | 1 | 
| Voltage - Input (Min) | 4.5V | 4.5V | 
| Voltage - Input (Max) | 40V | 40V | 
| Voltage - Output (Min/Fixed) | 12V | 12V | 
| Voltage - Output (Max) | - | - | 
| Current - Output | 500mA | 500mA | 
| Frequency - Switching | 150kHz | 150kHz | 
| Synchronous Rectifier | No | No | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | 8-SOIC | 8-SOIC |