ACT8946A datasheet(34/37 Pages) ACTIVE-SEMI

Part #	ACT8946A

Description	Advanced PMU for Hisilicon Processors

PDF	37 Pages

Scroll/Zoom	100%

Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

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

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34 / 37 page

ACT8946AQJ203-T

Rev 1.0, 08-Jul-16

ActivePMU and ActivePath are trademarks of Active-Semi.

34 -

www.active-semi.com

Figure 4: Typical Li+ charge profile and ACT8946A charge states

A: PRECONDITION

State

B: FAST-CHARGE

State

C: TOP-OFF State

D: END-OF-CHARGE

State

VTERM

ICHG

VPRECHARGE

PRECONDITION Charge Current

STATE

RECHARGE

Current

Voltage

END-OF-CHARGE Current

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)

ACT8946A Datasheet(PDF) 34 Page - Active-Semi, Inc

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