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TPS22981RGPR bảng dữ liệu(PDF) 12 Page - Texas Instruments

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tên linh kiện TPS22981RGPR
Giải thích chi tiết về linh kiện  Thunderbolt Power Mux
PDF  27 Pages
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Trang chủ  http://www.ti.com
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TPS22981RGPR bảng dữ liệu(HTML) 12 Page - Texas Instruments

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Load
Current
Output
Voltage
t
OC Limit
tLIM delay
EN
HV_EN
V3P3
VHV
OUT
3.3V
VHV
Hi-Z
Hi-Z
3.3V
Hi-Z
IDIS
0mA
IDIS
TPS22981
SLVSBM6B – DECEMBER 2012 – REVISED NOVEMBER 2015
www.ti.com
Figure 6 shows possible combinations of EN and HV_EN controlling OUT of the TPS22981.
Figure 6. Logic Waveforms Displaying the Transition Between VHV and V3P3
7.3.6 Overcurrent Limit and Short-Circuit Protection
When the load at OUT attempts to draw more current than the limit set by the external RSET resistors for the
V3P3 switch and VHV switch (for both S0 and S3 modes), the device will operate in a constant-current mode
while lowering the output voltage. Figure 7 shows the delay, tLIM, which occurs from the instance an overcurrent
fault is detected until the output current is lowered to ILIMHV tolerances for VHV or ILIM3V3 tolerances for V3P3
shown in Figure 3. Figure 8 shows the response time versus a resistance shorted across the output.
Figure 7. Overcurrent Output Response
12
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Product Folder Links: TPS22981



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