MAX8934BETI+T Maxim Integrated Products, MAX8934BETI+T Datasheet - Page 27

• Manufacturer Part Number: MAX8934BETI+T
• Description: IC BATTERY CHARGER DUAL 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: Smart Power Selector™r

Specifications of MAX8934BETI+T

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 4.1 V ~ 6.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dual-Input Linear Chargers, Smart Power Selector
Figure 8. Charger State Diagram
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
CHG = HIGH-Z
ANY CHARGING
FLT = HIGH-Z
STATE DIAGRAM IS FOR 10NC < TEMP < +45NC,
SUSPEND
I
OVERTEMP
CHG
OT = LOW
STATE
OUTSIDE OF THIS RANGE SEE FIGURE 7
V
RESET TIMER
= 0mA
BATT
< 2.82V
V
TIMER SUSPEND
V
THMT1
THM
< V
> V
THM_OT
THM
> V
THMT4
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
CHG = HIGH-Z
I
BATT = 4.2V
FLT = HIGH-Z
CHG = LOW
CHG = LOW
CHG
I
NOT READY
PREQUAL
CHG
TOP-OFF
I
CHG
= I
DONE
= I
BATT
CHGMAX
BATT
BATT
= I
= 0mA
CHGMAX
= 0mA
UOK OR DOK = LOW
CEN = 0
RESET TIMER
TIMER > 15s (MAX8934A/MAX8934C
/MAX8934E)
TIMER > 60min (MAX8934B/MAX8934D)
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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