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| Part Number | LT1171CQ#PBF | LT1271CQ#PBF | LT1172CQ#PBF | LT1171IQ#PBF | LT1171CT#PBF | LT1170CQ#PBF | 
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | 
| Product Status | Active | Active | Active | Active | Active | Active | 
| Function | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | 
| Output Configuration | Positive or Negative | Positive or Negative | Positive or Negative | Positive or Negative | Positive or Negative | Positive or Negative | 
| Topology | Buck, Boost, Cuk, Flyback, Forward Converter | Buck, Boost, Buck-Boost, Flyback | Buck, Boost, Cuk, Flyback, Forward Converter | Buck, Boost, Cuk, Flyback, Forward Converter | Buck, Boost, Cuk, Flyback, Forward Converter | Buck, Boost, Cuk, Flyback, Forward Converter | 
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | 
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 
| Voltage - Input (Min) | 3V | 3.5V | 3V | 3V | 3V | 3V | 
| Voltage - Input (Max) | 40V | 30V | 40V | 40V | 40V | 40V | 
| Voltage - Output (Min/Fixed) | 1.244V | 1.244V | 1.244V | 1.244V | 1.244V | 1.244V | 
| Voltage - Output (Max) | 65V (Switch) | 60V (Switch) | 65V (Switch) | 65V (Switch) | 65V (Switch) | 65V (Switch) | 
| Current - Output | 2.5A (Switch) | 4A (Switch) | 1.25A (Switch) | 2.5A (Switch) | 2.5A (Switch) | 5A (Switch) | 
| Frequency - Switching | 100kHz | 60kHz | 100kHz | 100kHz | 100kHz | 100kHz | 
| Synchronous Rectifier | No | No | No | No | No | No | 
| Operating Temperature | 0°C ~ 100°C (TJ) | 0°C ~ 100°C (TA) | 0°C ~ 100°C (TJ) | -40°C ~ 100°C (TJ) | 0°C ~ 100°C (TJ) | 0°C ~ 100°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole | Surface Mount | 
| Package / Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-220-5 | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | 
| Supplier Device Package | 5-DDPAK | 5-DDPAK | 5-DDPAK | 5-DDPAK | TO-220-5 | 5-DDPAK |