| Part Number | MCP1257-E/UN | MCP1258-E/UN | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | 
|   |   | |
| Product Status | Active | Active | 
| Function | Step-Up | Step-Up | 
| Output Configuration | Positive | Positive | 
| Topology | Charge Pump | Charge Pump | 
| Output Type | Fixed | Fixed | 
| Number of Outputs | 1 | 1 | 
| Voltage - Input (Min) | 1.8V | 1.8V | 
| Voltage - Input (Max) | 3.6V | 3.6V | 
| Voltage - Output (Min/Fixed) | 3.3V | 3.3V | 
| Voltage - Output (Max) | - | - | 
| Current - Output | 100mA | 100mA | 
| Frequency - Switching | 650kHz | 650kHz | 
| Synchronous Rectifier | No | No | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | 
| Supplier Device Package | 10-MSOP | 10-MSOP |