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| Mounting Type | Surface Mount |
| Package / Case | 20-VQFN Exposed Pad |
| Supplier Device Package | 20-QFN (5x5) |
| Mounting Style | SMD/SMT |
| Package | Tape & Reel (TR);Cut Tape (CT);Digi-Reel®; |
| Base Product Number | SI3402 |
| Mfr | Skyworks Solutions Inc. |
| Product Status | Active |
| Duty Cycle - Max | 75 % |
| Maximum Operating Temperature | + 85 C |
| Minimum Operating Temperature | - 40 C |
| On Resistance - Max | 1.3 Ohms |
| Current Limit | 680 mA |
| Operating Temperature | -40°C ~ 85°C |
| Series | - |
| Type | Controller (PD), DC/DC |
| Subcategory | Switch ICs |
| Voltage - Supply | 2.8V ~ 57V |
| Operating Supply Voltage | 2.8 V to 57 V |
| Number of Channels | 1 |
| Operating Supply Current | 2 mA |
| Power - Max | 17 W |
| Current - Supply | 2mA |
| Product Type | Power Switch ICs - POE / LAN |
| Inductance Tolerance | 10 |
| Internal Switch(s) | Yes |
| Standards | 802.3at (PoE+), 802.3af (PoE) |
| Standard | 802.3af |
| Auxiliary Sense | No |
| Product Length | 3.4 |
| Product Width | 2.69 |
| Factory Lead Time | 8 Weeks |
| Surface Mount | YES |
| Operating Temperature | -40°C~85°C |
| Packaging | Tape & Reel (TR) |
| Published | 1997 |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Number of Terminations | 20 |
| ECCN Code | EAR99 |
| Max Power Dissipation | 17W |
| Voltage - Supply | 2.8V~57V |
| Terminal Position | QUAD |
| Peak Reflow Temperature (Cel) | 260 |
| Number of Functions | 1 |
| Terminal Pitch | 0.8mm |
| Frequency | 350kHz |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| JESD-30 Code | S-XQCC-N20 |
| Input Voltage-Nom | 5V |
| Operating Supply Current | 2mA |
| Output Current-Max | 0.68A |
| Control Technique | PULSE WIDTH MODULATION |
| Nominal Input Voltage | 57V |
| Switcher Configuration | BUCK |
| Length | 5mm |
| Height Seated (Max) | 0.9mm |
| Width | 5mm |
| RoHS Status | RoHS Compliant |
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