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BQ40Z50RSMT-R1 데이터시트(PDF) 34 Page - Texas Instruments

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부품명 BQ40Z50RSMT-R1
상세설명  Li-Ion Battery Pack Manager
PDF  55 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

BQ40Z50RSMT-R1 데이터시트(HTML) 34 Page - Texas Instruments

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SLUSCB3 – JULY 2015
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Figure 28. System Present Pull-Down Resistor
Because the System Present signal is part of the pack connector interface to the outside world, it must be
protected from external electrostatic discharge events. An integrated ESD protection on the PRES device pin
reduces the external protection requirement to just R29 for an 8-kV ESD contact rating. However, if it is possible
that the System Present signal may short to PACK+, then R28 and D4 must be included for high-voltage
protection.
Figure 29. System Present ESD and Short Protection
9.2.2.2.4
SMBus Communication
The SMBus clock and data pins have integrated high-voltage ESD protection circuits, however, adding a Zener
diode (D2 and D3) and series resistor (R24 and R26) provides more robust ESD performance.
34
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