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参数资料
| 型号： | MAX1811ESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER USB LI+ 8-SOIC |
| 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） |
| 电源电压： | 4.35 V ~ 6.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
MAX1811
USB-Powered Li+ Charger
Charging from AC Adapters
The MAX1811 also operates from sources other than
USB ports. The full charging input voltage range is
4.35V to 6.5V. When charging in the 500mA mode with
an AC adapter, rely on the thermal loop to limit the
Use a larger input bypass capacitor for high input volt-
ages or high charging current to reduce supply noise.
power dissipation by limiting the charge current at
higher input voltages if limited PC board area is avail-
able to dissipate heat.
Capacitor Selection
Use a minimum of 2.2μF placed close to BATT for prop-
er stability. Bypass IN to GND with a 4.7μF capacitor.
TRANSISTOR COUNT: 1907
PROCESS: BiCMOS
Chip Information
HOST OR
POWERED HUB
BUS-POWERED
HUB
LOW-POWER
FUNCTION
4.750V
4.735V
4.640V
4.625V
*4.400V
4.397V
4.378V
4.375V
4.500V
4.350V
0.000V
0.015V
0.110V
0.125V
0.000V
0.003V
0.002V
0.025V
REFERENCED REFERENCED
TO SOURCE TO HUB
*UNDER TRANSIENT CONDITIONS, SUPPLY AT HUB CAN DROP FROM 4.00V TO 4.070V.
Figure 3. USB Voltage Specification
4.35V TO 6.5V
4.2V
4.1V
ON
IN
SELV
MAX1811
BATT
LED
TO LOAD
SINGLE
Li+
CELL
TO IN
OFF
500mA
EN
CHG
100mA
SELI
GND
GND
CHG
LOGIC OUT
10k ?
Figure 4. Charging from a USB Port
Maxim Integrated
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1812EUB | 功能描述:电源开关 IC - USB Dual USB Switch w/Fault Blanking RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1812EUB+ | 功能描述:电源开关 IC - USB Dual USB Switch w/Fault Blanking RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1812EUB+T | 功能描述:电源开关 IC - USB Dual USB Switch w/Fault Blanking RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1812EUB-T | 功能描述:电源开关 IC - USB Dual USB Switch w/Fault Blanking RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1813EEI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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