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Si3452B-B01-GM датащи(PDF) 5 Page - Silicon Laboratories |
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Si3452B-B01-GM датащи(HTML) 5 Page - Silicon Laboratories |
5 / 36 page Si3452/3 Rev. 1.0 5 Table 2. Recommended Operating Conditions Description Symbol Test Conditions Min Typ Max Unit Ambient operating tem- perature TA “–GM” part numbers –10 — 85 °C “–IM” part numbers –40 — 85 Thermal impedance* θ JA No airflow — 32 — °C/W 1 m/s airflow — 28 — Power Supply Voltages VEE supply voltage VEE For IEEE 802.3af (15.4 W) apps. –57 –48 –45 V For IEEE 802.3at (30 W) apps. –57 –54 –51 VDD supply voltage VDD 3.0 3.3 3.6 V Power Supply Currents VEE supply current IEE All ports on, excluding load current. — 3.7 6.0 mA All ports in shutdown mode — 1 2 VDD supply current IDD —8 14 mA *Note: Modeled with six parts evenly spaced on a 30 x 120 mm2, four-layer board with 25 thermal vias to a Vneg plane on the back. Table 3. UVLO, and Reset Specifications Description Symbol Test Conditions Min Typ Max Unit VDD reset threshold VRST —2.2 — V VDD power-on ramp * Ramp from 0 V to 3.0 V — — 1 ms RST input high voltage 0.7 x VDD —— V RST input low voltage — — 0.8 V RST input leakage RST =0V — — 40 μA Reset time delay TRSTDLY Time between end of reset and begin- ning of normal operation —— 100 ms Reset assertion time TRST RST low time to generate system reset 15 — — μs VEE monitor accuracy VEEMON Measured VEE relative to actual VEE for VEE (–44 to –57 V) –4 — 4 % VEE UVLO threshold VUVLO Point at which VEE UVLO is declared. VEE going negative VEE going positive –38 — –36 –33 — –31 V *Note: If VDD ramp time is slower than 1 ms, hold the reset pins low until VDD is above 3.0 V to insure proper reset operation. |
Аналогичный номер детали - Si3452B-B01-GM |
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Аналогичное описание - Si3452B-B01-GM |
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