SC824 datasheet(24/29 Pages) SEMTECH

tên linh kiện	SC824

Giải thích chi tiết về linh kiện	Single-cell Li-Ion Charger Tri-Mode with Timer and NTC

PDF	29 Pages

Scroll/Zoom	100%

nhà sản xuất	SEMTECH [Semtech Corporation]

Trang chủ	http://www.semtech.com

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24 / 29 page

SC824

Applications Information (continued) — Multi-stage Timer Logical State Machine

Spawned timer, can run

simultaneously with

TOP-OFF TIMER

Timer clock

stopped

Clear the timer

counter

Clear the timer

counter

Clear the timer

counter

Clear the timer

counter

Clear the timer

counter

Immediate &

Unconditional

Timer Enabled

AND (VBAT > VCV)

Timer Enabled AND

((t > tCV) OR (IBAT < ITERM))

Timer Disabled

OR (t > tTO)

TIMER

START

t > tPreQF

PRE-

CHARGE

TIMER

(t > tCCF) OR

((t > ¼tCCF ) AND (VBAT < VPreQ))

CC TIMER

(t > tPreQF) AND

(VBAT < VPreQ )

CV TIMER

t > tSD

Timer Disabled AND

(IBAT < ITERM) AND (VBAT = VCV)

TIMER

HOLD

STATUS

DELAY

TIMER

Turn off

STAT1

Timer

Disabled

Timer

Disabled

Timer Enabled

Transition

Comments

State Comments

Logical

State

Logical

State

Transition

Condition

State Entry

Path

State Exit

Path

KEY:

TimerFault

Signal to Charger

State Machine

Signal from Charger

State Machine

Signals to and from

Charger State Machine

Signal from Charger

State Machine

VBAT > VPreQ

TOP-OFF

TIMER

HALT

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