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| 型号： | MAX8900DEWV+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/35页 |
| 文件大小： | 0K |
| 描述： | IC LI BATTERY CHARGER 1.2A WLP |
| 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： | 3.4 V ~ 6.3 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 30-WFBGA，WLBGA |
| 供应商设备封装： | 30-WLP |
| 包装： | 带卷 (TR) |
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MAX8900A/MAX8900B/MAX8900C
1.2A Switch-Mode Li+ Chargers with ±22V Input
Rating and JEITA Battery Temperature Monitoring
to enable the MAX8900_. CEN has an internal 200k I
pulldown resistor. When disabled, the MAX8900_ supply
current is reduced, the step-down converter high-side and
low-side switches are off, and the AVL is disabled.
In many systems, there is no need for the system control-
ler (typically a microprocessor ( F P)) to disable the char-
ger because the MAX8900_ independently manages the
charger. In these situations, CEN can be connected to
ground or left unconnected. Note: if CEN is permanently
connected to ground or left unconnected, the input
power must be cycled to escape from a timer fault state
(see Figures 7 and 8 for more information).
V IN must be greater than V UVLO-RISING for the MAX8900_
to operate when CEN is pulled low. For example, if CEN is
low and the MAX8900_ is operating with V UVLO-FALLING
< V IN < V UVLO-RISING , then toggling CEN results in a
nonoperating condition.
Charger States
The MAX8900_ utilizes several charging states to safely
and quickly charge batteries as shown in Figure 7.
Figure 6 shows an exaggerated view of a Li+/Li-Poly
battery progressing through the following charge states
when the die and battery are close to room temperature:
dead battery è prequalification è fast-charge è top-off
è done.
V BATREG
V PQUTH
V DBAT
V PQLTH
TIME
I CHG P I SET
I DBAT + I PQ
I PQ
I DBAT
0
TIME
Figure 6. Li+/Li-Poly Charge Profile
Maxim Integrated
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8901AETA+ | 制造商:Maxim Integrated Products 功能描述:HIGHEST EFFICIENCY SUPPLY 8TDFN EP - Rail/Tube |
| MAX8901AETA+T | 功能描述:LED照明驱动器 Supply for 2 to 6 Series WLEDs RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX8901BETA+ | 制造商:Maxim Integrated Products 功能描述:HIGHEST EFFICIENCY SUPPLY FOR 2 TO 6 SERIES WLEDS IN A - Rail/Tube |
| MAX8901BETA+CAR | 功能描述:LED照明驱动器 RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX8901BETA+T | 功能描述:LED照明驱动器 Supply for 2 to 6 Series WLEDs RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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