参数资料
型号: MAX8677CETG+T
厂商: Maxim Integrated Products
文件页数: 16/21页
文件大小: 0K
描述: IC USB/AC ADP CHARGER 24-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.1 V ~ 6.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-TQFN-EP(4x4)
包装: 带卷 (TR)
1.5A Dual-Input USB/AC Adapter Charger
and Smart Power Selector
CEN = HI
NOT READY
UOK AND DOK = HIGH IMPEDANCE
CHG = HIGH IMPEDANCE
OR
REMOVE AND RECONNECT
THE INPUT SOURCE(S).
ANY STATE
FLT = HIGH IMPEDANCE
PREQ = HIGH IMPEDANCE
I CHG = 0mA
TOGGLE CEN
UOK OR DOK = LOW
CEN = 0
RESET TIMER
PREQUAL
UOK OR DOK = LOW
CHG = LOW
FLT = HIGH IMPEDANCE
PREQ = LOW
0V ≤ V BATT ≤ 3V
I CHG = I CHGMAX /10
OR
REMOVE AND RECONNECT
THE INPUT SOURCE(S).
TIMER > t PREQUAL
FAULT
V BATT < 2.82V,
RESET TIMER
V BATT > 3V,
RESET TIMER
UOK OR DOK = LOW
CHG = HIGH IMPEDANCE
FLT = LOW
PREQ = PREVIOUS STATE
FAST CHARGE
UOK OR DOK = LOW
CHG = LOW
I CHG = 0mA
V BATT < 2.8V
RESET TIMER
ANY CHARGING
STATE
FLT = HIGH IMPEDANCE
PREQ = HIGH IMPEDANCE
3V < V BATT < 4.2V
I CHG ≤ I CHGMAX
I CHG < I TERM
AND V BAT = 4.2V
I CHG > I TERM
AND THERMAL
RESET TIMER
OR INPUT LIMIT
NOT EXCEEDED.
RESET TIMER.
TOP-OFF
TIMER > t FSTCHG
(TIMER SLOWED BY 2X IF
I CHG < I CHGMAX /2, AND
PAUSED IF I CHG < I CHGMAX /5
WHILE BAT < 4.2V)
THM OK
TIMER RESUME
THM NOT OK
TIMER SUSPEND
UOK OR DOK = LOW
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
V BAT < 4.1V
RESET TIMER
PREQ = HIGH IMPEDANCE
TEMPERATURE
SUSPEND
I CHG = 0mA
UOK OR DOK = PREVIOUS STATE
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
PREQ = PREVIOUS STATE
BATT = 4.2V
I CHG < I TERM
TIMER > 15s
DONE
UOK OR DOK = 0V
CHG = HIGH IMPEDANCE
FLT = HIGH IMPEDANCE
PREQ = HIGH IMPEDANCE
4.1 < V BATT < 4.2V
I CHG = 0mA
Figure 5. MAX8677C Charger State Flowchart
16
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