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SI3401 データシート(PDF) 6 Page - Silicon Laboratories |
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SI3401 データシート(HTML) 6 Page - Silicon Laboratories |
6 / 20 page Si3400/Si3401 6 Rev. 0.9 Table 4. Electrical Characteristics Parameter Description Min Typ Max Unit VPORT Detection 2.7 — 11 V Classification 14 — 22 UVLO Turn Off — — 42 UVLO Turn On 30 — 36 Transient Surge1 62 — 79 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 — 130 — mA Operating 350 (Si3400) 470 (Si3401) 525 550 —mA Hotswap FET On-Resistance + RSENSE 36 V < VPORT < 57 V 0.5 — 1.4 Ω Power loss VPORT Threshold 27 30 33 V Switcher Frequency — 350 — kHz Maximum Switcher Duty Cycle5 ISOSSFT connected to VDD —50 — % Switching FET On-Resistance 0.3 — 0.86 Ω Regulated Feedback @ pin FB6 DC Avg. — 1.23 — V Regulated Output Voltage Tolerance6 Output voltage tolerance @ VOUT –5 — 5 % 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 Ω 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 “AN296: Using the Si3400/01 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). |
同様の部品番号 - SI3401 |
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同様の説明 - SI3401 |
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