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参数资料
| 型号： | MAX8819BETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/29页 |
| 文件大小： | 0K |
| 描述： | IC PMIC W/INT CHARGER 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 应用： | 手持/移动设备 |
| 电源电压： | 2.6 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 管件 |
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PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
I CHGMAX = 2000 x
1.5V
R CISET
NO INPUT POWER
DC = INVALID
I CHG = 0mA
CHG = 1
INPUT SUSPENDED
DC = VALID
DLIM[1:2] = 11
ANY STATE
DLIM[1:2] = 11
CHARGER DISABLED
I CHG = 0mA
CHG = 1
DLIM[1:2] ≠ 11
I CHG = 0mA
CHG = 1
CEN = 0
CEN = 1
IC SETS TIMER = 0
t > t PREQUAL
TIMER FAULT
I CHG = 0mA
CHG = 2Hz SQUAREWAVE
PREQUALIFICATION
I CHG ≤ I CHGMAX /10
CHG = 0
V BAT < 2.82V
IC SETS TIMER = 0
V BAT > 3V,
IC SETS TIMER = 0
t > t FSTCHG
I CHG < I CHGMAX x 50%
AND V BAT < V BATREG
IC EXTENDS TIMER BY 2x
I CHG < I CHGMAX x 53%
OR V BAT = V BATREG
IC RESUMES TIMER
FAST-CHARGE
I CHG ≤ I CHGMAX
CHG = 0
TIMER EXTEND
(I CHGMAX x 20%) < I CHG < (I CHGMAX x 50%)
CHG = 0
I CHG < I SET x 23%
I CHG < I CHGMAX x 20%
IC SETS TIMER = 0
I CHG < I CHGMAX x 10% AND V BAT
IC SETS TIMER = 0
OR V BAT = V BATREG
I CHG < I CHGMAX x 20% IC RESUMES TIMER
TOP-OFF
CHG = 1
V BAT = V BATREG
I CHG ≤ I CHGMAX /10
V BAT < (V BATREG
100mV)
AND V BAT <V BATREG
IC SUSPENDS
TIMER
TIMER SUSPEND
t TOPOFF >
33min
IC SETS TIMER = 0
I CHG < (I CHGMAX x 20%)
CHG = 0
DONE
(V BATREG -100mV) ≤ V BAT ≤ V BATREG
I CHG = 0mA
CHG = 1
Figure 3. Li+/Li-Poly Charger State Diagram
where charge current starts tapering down. When
? Battery voltage
charge current decreases to 10% of the maximum fast-
charge current, the charger enters a 33min top-off state
and then charging stops. If the battery voltage subse-
quently drops 100mV below the battery regulation volt-
age, charging restarts and the timers reset.
The battery charge rate is set by several factors:
?
?
?
?
DC input current limit
The charge-setting resistor, R CISET
The system load (I SYS )
The die temperature
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8819BETI+ | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8819BETI+T | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8819CETI+ | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8819CETI+T | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8819DETI+ | 功能描述:PMIC 解决方案 PMIC w/Charger & Smart Power Selector RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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