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參數(shù)資料
| 型號： | AAT3690IWP-4.2-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | 1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger |
| 中文描述： | 安培USB接口/適配器鋰離子電池充電器 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 425K |
| 代理商： | AAT3690IWP-4.2-T1 |
AAT3690
1.0A USB Port/Adapter
Lithium-Ion/Polymer Battery Charger
10
3690.2007.01.1.2
Charging Operation
Regardless of which charge input function is selected (i.e., either the adapter input or USB input), the AAT3690
has three basic modes for the battery charge cycle: constant current/fast charge; constant voltage; and end of
charge (see Figure 1).
Figure 1: Current vs. Voltage Profile During Charging Phases.
Constant Current
Charge Phase
Constant Voltage
Charge Phase
Charge Complete Voltage
Regulated Current
I = Max CC
I = CC/10
Fast Charge / Constant Current Charging
When enabled, the AAT3690 begins constant-cur-
rent fast charging. The fast charge Constant
Current (I
CC
) amplitude is determined by the
charge mode, ADP or USB, and is programmed by
the user via the R
SETADP
and R
SETUSB
resistors. The
AAT3690 remains in constant current charge mode
until the battery reaches the voltage regulation
point, V
BAT
.
Constant Voltage Charging
The system transitions to a constant voltage charg-
ing mode when the battery voltage reaches output
charge regulation threshold (V
BAT
) during the con-
stant current fast charge phase. The regulation
voltage level is factory programmed to 4.2V (±1%).
The charge current in the constant voltage mode
drops as the battery cell under charge reaches its
maximum capacity.
End of Charge Cycle Termination and
Recharge Sequence
When the charge current drops to 7.5% of the pro-
grammed fast charge current level in the constant
voltage mode, the device terminates charging and
goes into a standby state. The charger will remain
in a standby state until the battery voltage decreas-
es to a level below the battery recharge voltage
threshold (V
RCH
).
When the input supply is disconnected or drops
below UVLO or EN = 0, the charger will automati-
cally enter power-saving sleep mode. Consuming
an ultra-low 2
μ
A in sleep mode, the AAT3690 min-
imizes battery drain when it is not charging. This
feature is particularly useful in applications where
the input supply level may fall below the battery
charge or under-voltage lockout level. In such
cases where the AAT3690 input voltage drops, the
device will enter the sleep mode and automatically
resume charging once the input supply has recov-
ered from its fault condition.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3691IRN-4.2-T1 | 制造商:SKYWORKS SOLUTIONS 功能描述:AAT3691 Series 1.6 A 28 V Dual Input 1.6 A Linear Charger - TDFN-16 |
| AAT3692IRN-4.2-T1 | 功能描述:電池管理 2 Input 1.6A Linear Chrg w/28V OVP 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 |
| aat3693idh-aa-db1 | 制造商:Skyworks Solutions Inc 功能描述:AAT3693 Series 1.6 A Lithium-Ion/Polymer Battery Charger Eval Board |
| AAT3693IDH-AA-T1 | 功能描述:電池管理 Lithium-Ion/Polymer Batt Charger 1.6A 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 |
| AAT3693IDH-AB-T1 | 功能描述:電池管理 Lithium-Ion/Polymer Batt Charger 1.6A 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 |
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