ACT8810 datasheet(52/54 Pages) ACTIVE-SEMI

No. de pieza	ACT8810

Descripción Electrónicos	Eight Channel ActivePathTM Power Management IC

PDF	54 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ACTIVE-SEMI [Active-Semi, Inc]

Página de inicio	http://www.active-semi.com

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52 / 54 page

ActivePath

TM CHARGER

ACT8810

Rev 9, 15-Nov-12

Innovative Power

- 52 -

www.active-semi.com

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

2CTM is a trademark of NXP.

FUNCTIONAL DESCRIPTION CONT’D

Although the CHG_IN pin is designed for maximum

robustness and an absolute maximum voltage

rating of 14V for transients, attention must be given

to bypass techniques to ensure safe operation.

As a result, design of the CHG_IN bypass must

take care to “de-Q” the filter. This can be

accomplished by connecting a 1Ω resistor in series

with a ceramic capacitor (as shown in Figure 17), or

by using a tantalum or electrolytic capacitor to

utilize it’s higher ESR to dampen the ringing. For

additional protection in extreme situations, Zener

diodes with 12V clamp voltages may also be used.

In any case, it is always critical to evaluate voltage

transients at the ACT8810 CHG_IN pin with an

oscilloscope to ensure safe operation.

Figure 17:

CHG_IN Bypass Options for USB or Wall Adaptor Supplies

ACT8810 Datasheet(PDF) 52 Page - Active-Semi, Inc