| Part Number | LM2575BN | LM2575BU | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Function | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Buck | Buck | 
| Output Type | Adjustable | Adjustable | 
| Number of Outputs | 1 | 1 | 
| Voltage - Input (Min) | 4V | 4V | 
| Voltage - Input (Max) | 40V | 40V | 
| Voltage - Output (Min/Fixed) | 1.23V | 1.23V | 
| Voltage - Output (Max) | 37V | 37V | 
| Current - Output | 1A | 1A | 
| Frequency - Switching | 52kHz | 52kHz | 
| Synchronous Rectifier | No | No | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Through Hole | Surface Mount | 
| Package / Case | 16-DIP (0.300", 7.62mm) | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | 
| Supplier Device Package | 16-DIP | TO-263-5 |