ACT8941A datasheet(37/42 Pages) ACTIVE-SEMI

Part #	ACT8941A

Description	Advanced PMU for Rockchip RK2906/RK2918 Processor

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	http://www.active-semi.com

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37 / 42 page

ACT8941A

Rev 0, 12-Mar-13

- 37 -

www.active-semi.com

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

I2CTM is a trademark of NXP.

Innovative PowerTM

Active-Semi Proprietary―For Authorized Recipients and Customers

Figure 4:

Typical Li+ charge profile and ACT8941A charge states

A: PRECONDITION State

B: FAST-CHARGE State

C: TOP-OFF State

D: END-OF-CHARGE State

Figure 5:

Charger State Diagram

SUSPEND

PRECONDITION

FAST-CHARGE

END-OF-CHARGE

(VCHGIN < VBAT) OR (VCHGIN <VCHGIN UVLO)

OR (VCHGIN > VOVP) OR (SUSCHG[ ] = 1)

(VCHGIN > VBAT) AND (VCHGIN >VCHGIN UVLO)

AND (VCHGIN < VOVP) AND (SUSCHG[ ] = 0)

(VBAT > 2.85V) AND

(TQUAL = 32ms)

(VBAT = VTERM ) AND

(TQUAL = 32ms)

TEMP-FAULT

TOP-OFF

(IBAT < 10% x ICHG) OR (Total

Time-out) AND (TQUAL = 32ms)

Total Time-out

TEMP OK

ANY STATE

TEMP NOT OK

TIME-OUT-FAULT

PRECONDITION

Time-out

(VBAT < VTERM - 205mV )

AND (TQUAL = 32ms)

ACT8941A Datasheet(PDF) 37 Page - Active-Semi, Inc

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