| Part Number | LM2599S-5.0 | LM2598S-5.0 | 
|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | 
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | 
|   |   | |
| Product Status | Active | Active | 
| Function | - | Step-Down | 
| Output Configuration | - | Positive | 
| Topology | - | Buck | 
| Output Type | - | Fixed | 
| Number of Outputs | - | 1 | 
| Voltage - Input (Min) | - | 4.5V | 
| Voltage - Input (Max) | - | 40V | 
| Voltage - Output (Min/Fixed) | - | 5V | 
| Voltage - Output (Max) | - | - | 
| Current - Output | - | 1A | 
| Frequency - Switching | - | 150kHz | 
| Synchronous Rectifier | - | No | 
| Operating Temperature | - | -40°C ~ 125°C (TJ) | 
| Mounting Type | - | Surface Mount | 
| Package / Case | - | TO-263-8, D²Pak (7 Leads + Tab), TO-263CA | 
| Supplier Device Package | - | DDPAK/TO-263-7 |