Datenblatt-Suchmaschine für elektronische Bauteile |
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ACT8847_17 Datenblatt(PDF) 39 Page - Active-Semi, Inc |
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ACT8847_17 Datenblatt(HTML) 39 Page - Active-Semi, Inc |
39 / 42 page ACT8847 Rev 9, 27-June-17 Innovative PowerTM - 39 - www.active-semi.com Copyright © 2015-2017 Active-Semi, Inc. ActivePMUTM is a trademark of Active-Semi. I2CTM is a trademark of NXP. Hardware Configuration The following hardware connections are required to achieve the specified startup sequencing. Connect a 2.2uF capacitor between GPIO1 and GPIO2 Connect a 1Mohm resistor from GPIO2 to GA. Connect a 51kohm resistor between GPIO3 and nPBIN. Connect a 10kohm resistor between REG7 and PWRHLD. Startup The ACT8847QM102-T has three startup sequences. REG13. When power is applied to the IC. REG13 automatically turns on when input power is applied and the input voltage is above UVLO. REG7/1/4/2/5. REG7/1/4/2/5 turn on when GPIO1 is pulled high. REG7/1/4/2/5 are latched on after REG7 goes into regulation and pulls PWRHLD high. GPIO1 may remain high or return to a logic low after this time. REG7/1/4/2/5 stay on in either case. REG3. The enable input for REG3 is the AND of PWRHLD and PWREN. Note that PWRHLD should be connected to REG7. REG3 is intended to be turned on after REG7/1/4/2/5 are in regulation. Once REG7/1/4/2/5 are in regulation and PWRHLD is high, REG3 can be independently enabled and disabled with PWREN. |
Ähnliche Teilenummer - ACT8847_17_06 |
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Ähnliche Beschreibung - ACT8847_17_06 |
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