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| Part Number | LM2576-12BU | LM2576-12WU | LM2576-12BT | 
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | 
| Product Status | Obsolete | Active | Obsolete | 
| Function | Step-Down | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | Positive | 
| Topology | Buck | Buck | Buck | 
| Output Type | Fixed | Fixed | Fixed | 
| Number of Outputs | 1 | 1 | 1 | 
| Voltage - Input (Min) | 4V | 4V | 4V | 
| Voltage - Input (Max) | 40V | 40V | 40V | 
| Voltage - Output (Min/Fixed) | 12V | 12V | 12V | 
| Voltage - Output (Max) | - | - | - | 
| Current - Output | 3A | 3A | 3A | 
| Frequency - Switching | 52kHz | 52kHz | 52kHz | 
| Synchronous Rectifier | No | No | No | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | Through Hole | 
| Package / Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-220-5 | 
| Supplier Device Package | TO-263-5 | TO-263-5 | TO-220-5 |