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| Part Number | LT1959CS8#TRPBF | LT1959IS8#TRPBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Linear Technology | 
| Product Status | Active | Active | 
| Function | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Buck, SEPIC | Buck, SEPIC | 
| Output Type | Adjustable | Adjustable | 
| Number of Outputs | 1 | 1 | 
| Voltage - Input (Min) | 4.3V | 4.3V | 
| Voltage - Input (Max) | 15V | 15V | 
| Voltage - Output (Min/Fixed) | 1.21V | 1.21V | 
| Voltage - Output (Max) | 12.9V | 12.9V | 
| Current - Output | 4.5A (Switch) | 4.5A (Switch) | 
| Frequency - Switching | 500kHz | 500kHz | 
| Synchronous Rectifier | No | No | 
| Operating Temperature | 0°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | 8-SO | 8-SO |