| Part Number | LT3439EFE#PBF | LT3435EFE#PBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | 
|   |   | |
| Product Status | Active | Active | 
| Function | Step-Up/Step-Down | Step-Down | 
| Output Configuration | Positive, Isolation Capable | Positive | 
| Topology | Push-Pull | Buck | 
| Output Type | Fixed | Adjustable | 
| Number of Outputs | 1 | 1 | 
| Voltage - Input (Min) | 2.8V | 3V | 
| Voltage - Input (Max) | 17.5V | 60V | 
| Voltage - Output (Min/Fixed) | - | 1.25V | 
| Voltage - Output (Max) | - | 55.2V | 
| Current - Output | 1A | 3A (Switch) | 
| Frequency - Switching | 20kHz ~ 250kHz | 500kHz | 
| Synchronous Rectifier | No | No | 
| Operating Temperature | 0°C ~ 70°C (TJ) | 0°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 
| Supplier Device Package | 16-TSSOP-EP | 16-TSSOP-EP |