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| Part Number | LM3549SQE/NOPB | LM3549SQX/NOPB | LM3549SQ/NOPB |
|---|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active |
| Type | DC DC Regulator | DC DC Regulator | DC DC Regulator |
| Topology | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) |
| Internal Switch(s) | Yes | Yes | Yes |
| Number of Outputs | 3 | 3 | 3 |
| Voltage - Supply (Min) | 2.7V | 2.7V | 2.7V |
| Voltage - Supply (Max) | 5.5V | 5.5V | 5.5V |
| Voltage - Output | 4.6V | 4.6V | 4.6V |
| Current - Output / Channel | 705mA | 705mA | 705mA |
| Frequency | 2.4MHz | 2.4MHz | 2.4MHz |
| Dimming | I²C | I²C | I²C |
| Applications | - | - | - |
| Operating Temperature | -30°C ~ 85°C (TA) | -30°C ~ 85°C (TA) | -30°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad |
| Supplier Device Package | 24-WQFN (4x4) | 24-WQFN (4x4) | 24-WQFN (4x4) |
