| Part Number | LM78S40CN | LM78S40N |
|---|---|---|
| Manufacturer | National Semiconductor | National Semiconductor |
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators |
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| Product Status | Active | Active |
| Function | Step-Up, Step-Down | Step-Up, Step-Down |
| Output Configuration | Positive or Negative | Positive or Negative |
| Topology | Buck, Boost | Buck, Boost |
| Output Type | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 2.5V | 2.5V |
| Voltage - Input (Max) | 40V | 40V |
| Voltage - Output (Min/Fixed) | 1.25V | 1.25V |
| Voltage - Output (Max) | 40V (Switch) | 40V (Switch) |
| Current - Output | 1.5A (Switch) | 1.5A (Switch) |
| Frequency - Switching | 100Hz ~ 100kHz | 100Hz ~ 100kHz |
| Synchronous Rectifier | No | No |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP | 16-PDIP |