| Part Number | LT3667EUDD | LT3667IUDD | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | PMIC - Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching | 
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| Product Status | Obsolete | Obsolete | 
| Topology | Step-Down (Buck) (1), Linear (LDO) (2) | Step-Down (Buck) (1), Linear (LDO) (2) | 
| Number of Outputs | 3 | 3 | 
| Frequency - Switching | 243kHz ~ 2.2MHz | 243kHz ~ 2.2MHz | 
| Voltage/Current - Output 1 | 1.2V ~ 38.6V, 400mA | 1.2V ~ 38.6V, 400mA | 
| Voltage/Current - Output 2 | 0.8V ~ 38.6V, 200mA | 0.8V ~ 38.6V, 200mA | 
| Voltage/Current - Output 3 | 0.8V ~ 38.6V, 200mA | 0.8V ~ 38.6V, 200mA | 
| w/LED Driver | No | No | 
| w/Supervisor | No | No | 
| w/Sequencer | No | No | 
| Voltage - Supply | 1.6V ~ 45V | 1.6V ~ 45V | 
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad | 
| Supplier Device Package | 24-QFN (3x5) | 24-QFN (3x5) |