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SI3459 Datasheet(PDF) 5 Page - Silicon Laboratories |
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SI3459 Datasheet(HTML) 5 Page - Silicon Laboratories |
5 / 57 page Si3459 Rev. 1.1 5 Power Supply Currents3 VPWR Supply Current IVPWR During normal operation — 2 5 mA VDD Supply Current IDD —18 25 mA Detection Specification Detection Voltage when RDET = 25.5k VPORTn Primary detection voltage — –4.0 –2.8 V Secondary detection voltage –10 –8.0 — V Detection Current Limit IDET Measured when VPORTn =0V — 3 4.9 mA Minimum Signature Resistance @ PD RDET_MIN 15 — 19 k Maximum Signature Resistance @ PD RDET_MAX 26.5 — 33 k Shorted Port Threshold RSHORT 150 — 400 Open Port Threshold ROPEN 100 — 400 k Classification Specifications Classification Voltage VCLASS 0 mA < ICLASS < 45 mA –20.5 — –15.5 V Classification Current ICLASS Measured when VPORTn =0V 55 — 95 mA Classification Current Region ICLASS_RE- GION Class 0 0 — 5 mA Class 1 8 — 13 mA Class 2 16 — 21 mA Class 3 25 — 31 mA Class 4 35 — 45 mA Table 1. PSE Port Interface Recommended Operating Conditions1 (Continued) Parameter Symbol Test Condition Min Typ Max Unit Notes: 1. Port voltages are referenced with respect to VPWR. All other voltages are referenced with respect to GND. These specifications apply over the recommended operating voltage and temperature ranges of the device unless noted otherwise. Typical performance is for TA =25°C, VDD =AGND + 3.3 V, AGND and DGND = 0 V, and VPWR at 48 V. 2. For a description of the detailed behavior of VDD UVLO, see “4.2.2. Global Event Register and Global Event COR (0x02, 0x03)” . 3. Positive values indicate currents flowing into the device; negative currents indicate current flowing out of the device. |
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