MAX8934GETI+ Maxim Integrated Products, MAX8934GETI+ Datasheet - Page 25

• Manufacturer Part Number: MAX8934GETI+
• Description: IC LI BATT CHARGER DUAL 28TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8934GETI+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 7. Charger State Diagram
Dual-Input Linear Charger, Smart Power Selector
V
THM_T1
with Advanced Battery Temperature Monitoring
< V
V
TIMER RESUME
THM
THM
> V
< V
UOK OR DOK = PREVIOUS STATE
THM_OT
THM_T4
______________________________________________________________________________________
TEMPERATURE
(PQ, FC, TOP-OFF)
DONE = HIGH-Z
ANY CHARGING
CHG = HIGH-Z
FLT = HIGH-Z
SUSPEND
I
OVERTEMP
CHG
OT = LOW
STATE
= 0mA
STATE DIAGRAM IS FOR 10NC < TEMP < +45NC,
OUTSIDE OF THIS RANGE SEE FIGURE 6
V
TIMER SUSPEND
V
V
RESET TIMER
THM_T1
THM
BATT
< V
< 2.82V
< V
THM_OT
THM
OR V
THM
< V
THM_T4
V
RESET TIMER
RESET TIMER
BATT
I
CHG
< 2.82V,
> I
DONE
UOK AND DOK = HIGH-Z
UOK OR DOK = LOW
UOK OR DOK = LOW
UOK OR DOK = LOW
UOK OR DOK = LOW
4.1V < V
I
3V P V
CHG
0V P V
FAST-CHARGE
I
DONE = HIGH-Z
DONE = HIGH-Z
DONE = HIGH-Z
CHG
CHG = HIGH-Z
CHG = HIGH-Z
DONE = HIGH-Z
FLT = HIGH-Z
FLT = HIGH-Z
FLT = HIGH-Z
FLT = HIGH-Z
DONE = LOW
I
CHG = HIGH-Z
BATT = 4.2V
CHG = LOW
CHG = LOW
NOT READY
FLT = HIGH-Z
CHG
I
PREQUAL
CHG
TOP-OFF
I
CHG
= I
DONE
= I
BATT
BATT
CHGMAX
BATT
= I
CHGMAX
= 0mA
= 0mA
UOK OR DOK = LOW
CEN = 0
RESET TIMER
TIMER > 15s
DONE
P 4.2V
< 4.2V
P 3V
10
V
RESET TIMER
I
AND V
AND THERMAL
OR OUTPUT LIMIT
NOT EXCEEDED
RESET TIMER
CHG
BATT
< I
> 3V,
BATT
DONE
= 4.2V
CEN = HIGH
OR
REMOVE AND RECONNECT
THE INPUT SOURCE(S)
TIMER > t
PAUSED IF I
PQ
(TIMER SLOWED BY 2X IF
UOK AND DOK = LOW
I
CHG
WHILE BATT < 4.2V)
DONE = HIGH-Z
CHG = HIGH-Z
I
FLT = LOW
< I
CHG
TIMER > t
FAULT
CHGMAX
RESET TIMER
V
CHG
BATT
OR REMOVE AND RECONNECT
= 0mA
THE INPUT SOURCE(S)
< I
< 4.1V
FC
/2, AND
CHGMAX
TOGGLE CEN
/5
ANY STATE
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