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| 型号： | MAX8671XETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 30/44页 |
| 文件大小： | 0K |
| 描述： | IC PMIC W/CHARGER 40-TQFN-EP |
| 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： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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PMIC with Integrated Charger and
Smart Power Selector for Handheld Devices
NO INPUT POWER
I CHGMAX = 2000 x
1.5V
R CISET
CST [1:2] = 11
UOK = 0, DOK = 0
USB AND DC = INVALID
I CHG = 0mA
THERMISTOR SUSPEND
USB AND/OR DC = INVALID
CHARGER DISABLED
CST[1:2] = 11
UOK AND/OR DOK = 1
I CHG = 0mA
CEN = 1
OR
USUS = 1
ANY STATE
I CHG = 0mA
CST[1:2] = 01
UOK AND/OR DOK = 1
THM OUT OF RANGE
IC SUSPENDS TIMER
CEN = 0
USUS = 0
IC SETS TIMER = 0
PREQUALIFICATION
t > t PREQUAL
THM WITHIN RANGE
IC RESUMES TIMER
CST[1:2] = 00
UOK AND/OR DOK = 1
I CHG = I CHGMAX /10
TIMER FAULT
CST [1:2] = 10
I CHG = 0mA
V BAT < 2.82V
V BAT > 3.0V
UOK AND/OR DOK = 1
THERMISTOR SUSPEND
THM OUT OF RANGE
IC SUSPENDS TIMER
IC SETS TIMER = 0
IC SETS TIMER = 0
I CHG = 0mA
CST[1:2] = 01
UOK AND/OR DOK = 1
FAST-CHARGE
CST[1:2] = 00
UOK AND/OR DOK = 1
t > t FST-CHG
I CHG < I CHGMAX x 53%
OR V BAT = V BATREG
IC RESUMES TIMER
THM WITHIN RANGE
IC RESUMES TIMER
I CHG > I CHGMAX x 7%
IC SETS TIMER = 0
I CHG < I CHGMAX x 4%
AND V BAT = 4.2V
IC SETS TIMER = 0
I CHG < I CHGMAX x 50%
AND V BAT < V BATREG
IC EXTENDS TIMER BY 2x
TIMER EXTEND
THM OUT OF RANGE
TOP-OFF
CST[1:2] = 11
CST [1:2] = 00
(I SET x 20%) < I CHG < (I CHGMAX x 50%)
THERMISTOR SUSPEND
UOK AND/OR DOK = 1
V BAT = V BATREG
V BAT <
(V BATREG + V BATRCHG )
IC SETS TIMER = 0
I CHG = 0mA
CST[1:2] = 01
UOK AND/OR DOK = 1
THM WITHIN RANGE
t > 15s
I CHG < I CHGMAX x 20%
AND V BAT < V BATREG
IC SUSPENDS TIMER
I CHG < I CHGMAX x 23%
AND V BAT = V BATREG
IC RESUMES TIMER
DONE
CST[1:2] = 11
t > 15s
UOK AND/OR DOK = 1
(V BATREG + V BATRCHG ) < V BAT ≤ V BATREG
I CHG = 0mA
TIMER SUSPEND
CST [1:2] = 00
I CHG < (I CHGMAX x 20%)
Figure 7. Charger State Diagram
Charge Status Outputs (CST1, CST2)
CST1 and CST2 are open-drain charger status outputs.
Their function is shown in Table 3 and Figure 7. When
the MAX8671X is used with a μP, pull CST1 and CST2
up to the system logic voltage with resistors to indicate
charge status to the μP. Alternatively, CST1 and CST2
sink up to 20mA each for LED charge indicators.
If the charge status output feature is not required, connect
CST1 and CST2 to ground or leave them unconnected.
30
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