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SI3402-B-GM датащи(PDF) 6 Page - Silicon Laboratories |
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SI3402-B-GM датащи(HTML) 6 Page - Silicon Laboratories |
6 / 21 page Si3402-B 6 Rev. 1.0 Table 4. Electrical Characteristics Parameter Description Min Typ Max Unit VPORT Detection 2.7 — 11 V Classification 14 — 22 Undervoltage Lockout (UVLO) Engaged (Switching regulator OFF) —— 42 Undervoltage Lockout (UVLO) Disengaged (Switching regulator ON) 30 — 36 Transient Surge1 —100 — Input Offset Current VPORT < 10 V — — 10 µA Diode Bridge Leakage VPORT = 57 V — — 25 µA IPORT Classification2 Class 0 0 — 4 mA Class 1 9 — 12 Class 2 17 — 20 Class 3 26 — 30 Class 4 36 — 44 IPORT Operating Current3 36 V < VPORT < 57 V — 2 3.1 mA Current Limit4 Inrush — 140 — mA Operating 470 — 680 mA Hotswap FET On-Resistance 36 V < VPORT < 57 V 1 — 3 Power Loss (PLOSS) VPORT Threshold VPOS - (Greater of CT1 or CT2), or VPOS - (Greater of SP1 or SP2) 11.5 2 V Switcher Frequency — 350 — kHz Maximum Switcher Duty Cycle — 50 75 % Switcher Output Transient Voltage —— 100 V Switching FET On-Resistance 0.3 0.5 1 Regulated Feedback @ Pin FB6 DC Avg. — 1.35 — V Notes: 1. Transient surge defined in IEC60060 as a 1000 V impulse of either polarity applied to CT1–CT2 or SP1–SP2. The shape of the impulse shall have a 300 ns full rise time and a 50 µs half fall time with 201 source impedance. 2. The classification currents are guaranteed only when recommended RCLASS resistors are used, as specified in Table 10. 3. IPORT includes full operating current of switching regulator controller. 4. The PD interface includes dual-level input current limit. At turn-on, before the HSO load capacitor is charged, the current limit is set at the inrush level. After the capacitor has been charged within ~1.25 V of VNEG, the operating current limit is engaged. This higher current limit remains active until the UVLO lower limit has been tripped or until the hotswap switch is sufficiently current-limited to cause a foldback of the HSO voltage. 5. See application note, “AN956: Using the Si3402-B PoE PD Controller in Isolated and Non-Isolated Designs” for more information. 6. Applies to non-isolated applications only (VOUT on schematic in Figure 1). |
Аналогичный номер детали - SI3402-B-GM |
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Аналогичное описание - SI3402-B-GM |
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