MAX8677CETG+T Maxim Integrated Products, MAX8677CETG+T Datasheet - Page 16

• Manufacturer Part Number: MAX8677CETG+T
• Description: IC USB/AC ADP CHARGER 24-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8677CETG+T

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 4.1 V ~ 6.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.5A Dual-Input USB/AC Adapter Charger
and Smart Power Selector
Figure 5. MAX8677C Charger State Flowchart
16
______________________________________________________________________________________
TIMER RESUME
UOK OR DOK = PREVIOUS STATE
THM OK
PREQ = PREVIOUS STATE
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
ANY CHARGING
TEMPERATURE
I
RESET TIMER
SUSPEND
CHG
V
STATE
BATT
= 0mA
< 2.8V
THM NOT OK
TIMER SUSPEND
V
RESET TIMER
RESET TIMER
BATT
I
CHG
UOK AND DOK = HIGH IMPEDANCE
< 2.82V,
> I
PREQ = HIGH IMPEDANCE
PREQ = HIGH IMPEDANCE
PREQ = HIGH IMPEDANCE
PREQ = HIGH IMPEDANCE
CHG = HIGH IMPEDANCE
CHG = HIGH IMPEDANCE
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
TERM
UOK OR DOK = LOW
UOK OR DOK = LOW
UOK OR DOK = LOW
I
CHG
UOK OR DOK = 0V
4.1 < V
3V < V
0V ≤ V
I
CHG
FAST CHARGE
PREQ = LOW
I
NOT READY
I
CHG = LOW
CHG = LOW
BATT = 4.2V
I
CHG
CHG
CHG
PREQUAL
= I
TOP-OFF
≤ I
DONE
BATT
CHGMAX
BATT
BATT
< I
= 0mA
= 0mA
CHGMAX
UOK OR DOK = LOW
CEN = 0
RESET TIMER
TERM
TIMER > 15s
< 4.2V
< 4.2V
≤ 3V
V
RESET TIMER
I
AND V
AND THERMAL
OR INPUT LIMIT
NOT EXCEEDED.
RESET TIMER.
/10
CHG
BATT
< I
> 3V,
BAT
TERM
= 4.2V
REMOVE AND RECONNECT
THE INPUT SOURCE(S).
TIMER > t
CEN = HI
OR
REMOVE AND RECONNECT
PREQUAL
V
RESET TIMER
PAUSED IF I
BAT
THE INPUT SOURCE(S).
(TIMER SLOWED BY 2X IF
I
CHG
< 4.1V
WHILE BAT < 4.2V)
TOGGLE CEN
TIMER > t
< I
CHG = HIGH IMPEDANCE
PREQ = PREVIOUS STATE
CHGMAX
OR
UOK OR DOK = LOW
CHG
I
FSTCHG
FLT = LOW
ANY STATE
CHG
< I
FAULT
/2, AND
CHGMAX
= 0mA
/5