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參數(shù)資料
| 型號(hào)： | MAX1811 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | USB-Powered Li+ Charger |
| 中文描述： | USB供電、Li+充電器 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 167K |
| 代理商： | MAX1811 |
M
USB-Powered Li+ Charger
_______________________________________________________________________________________
7
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
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.
Use a larger input bypass capacitor for high input volt-
ages or high charging current to reduce supply noise.
Chip Information
TRANSISTOR COUNT: 1907
PROCESS: BiCMOS
4.375V
4.735V
0.015V
4.640V
0.110V
4.625V
0.125V
4.500V
*4.400V
0.000V
4.397V
0.003V
4.378V
0.002V
4.350V
0.025V
4.750V
0.000V
LOW-POWER
FUNCTION
BUS-POWERED
HUB
HOST OR
POWERED HUB
REFERENCED
TO HUB
REFERENCED
TO SOURCE
*UNDER TRANSIENT CONDITIONS, SUPPLY AT HUB CAN DROP FROM 4.00V TO 4.070V.
Figure 3. USB Voltage Specification
MAX1811
SELI
EN
SELV
IN
4.35V TO 6.5V
4.2V
4.1V
ON
OFF
100mA
500mA
BATT
GND
GND
CHG
TO IN
TO LOAD
SINGLE
Li+
CELL
CHG
LOGIC OUT
LED
10k
Figure 4. Charging from a USB Port
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1811ESA | 功能描述:電池管理 USB-Powered Li+ Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1811ESA+ | 功能描述:電池管理 USB-Powered Li+ Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1811ESA+T | 功能描述:電池管理 USB-Powered Li+ Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1811ESA-T | 功能描述:電池管理 USB-Powered Li+ Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1812EUB | 功能描述:電源開關(guān) IC - USB Dual USB Switch w/Fault Blanking RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
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