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APW8804 Datasheet(PDF) 8 Page - Anpec Electronics Coropration |
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APW8804 Datasheet(HTML) 8 Page - Anpec Electronics Coropration |
8 / 21 page Copyright © ANPEC Electronics Corp. Rev. A.4 - Dec., 2012 APW8804 www.anpec.com.tw 8 Pin Description PIN NO. TDFN3X3-10 SOP-8P NAME FUNCTION 1 - NC No Connection. 2,3 1,2 LX Power Switching Output. LX is the Junction of the high-side and low-side Power MOSFETs to supply power to the output LC filter. 4 3 POK Power Good Output. This pin is open-drain logic output that is pulled to the ground when the output voltage is out of regulation point. 5 4 EN Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on the regulator, drive it low to turn it off. 6 5 FB Output Feedback Input. The APW8804 senses the feedback voltage via FB and regulates the voltage at 0.6V. Connecting FB with a resistor-divider from the converter’s output sets the output voltage. 7 - NC No connection. 8 7 VDD Signal Input. VDD supplies the control circuitry, gate drivers. Connecting a ceramic bypass capacitor from VDD to GND to eliminate switching noise and voltage ripple on the input to the IC. 9,10 8 PVDD Power Input. PVDD supplies the step-down converter switches. Connecting a ceramic bypass capacitor from PVDD to GND to eliminate switching noise and voltage ripple on the input to the IC. 11 9 GND (Exposed Pad) Ground and Exposed pad. Connect the exposed pad to the system ground plan with large copper area for dissipating heat into the ambient air. - 6 GND Ground. Power and signal ground. |
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