ACT2802 datasheet(10/21 Pages) ACTIVE-SEMI

Part #	ACT2802

Description	5V/2.5A Backup Battery Pack Manager

PDF	21 Pages

Scroll/Zoom	100%

Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

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

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10 / 21 page

ACT2802

Rev 0, 21-Jan-14

Innovative PowerTM

- 10 -

www.active-semi.com

Active-Semi Confidential―Do Not Copy or Distribute

ActiveSwitcher

TM is a trademark of Active-Semi.

FUNCTIONAL DESCRIPTION

the end of charge (EOC) threshold, defined as 13%

of fast charge current. When this happens, the state

machine terminates the charge cycle and jumps to

the EOC state.

End of Charge

When charges current decreases to 13% of set fast

charge current, the buck converter goes into end of

charge mode and keep monitoring the battery

voltage.

Recharge

When battery voltage drops by 200mV below the

end of charge voltage, the charger is reinitiated

with constant current charge.

A: PRECONDITION STATE

B: FAST-CHARGE STATE

C: TOP-OFF STATE

D: END-OF-CHARGE STATE

Figure 2.

Typical Li+ Charge Profile and ACT2802 Charge States

Figure 3.

Charger State Diagram

ACT2802 Datasheet(PDF) 10 Page - Active-Semi, Inc