參數(shù)資料
型號(hào)： L6924D013TR
廠商： 意法半導(dǎo)體
英文描述： Battery charger system with integrated power switch for Li-ION/Li-POLYMER
中文描述： 電池為鋰聚合物集成電源開(kāi)關(guān)，充電系統(tǒng)
文件頁(yè)數(shù)： 13/38頁(yè)
文件大小： 1350K
代理商： L6924D013TR
L6924D
Operation description
13/38
6.1
Linear mode
When operating in Linear Mode, the device works in a way similar to a linear regulator with a
constant current limit protection.
It charges the battery in three phases:
Pre-charging current ("Pre-Charge" phase).
Constant current ("Fast-Charge" phase).
Constant voltage ("Voltage Regulation" phase).
●
●
●
V
ADP
is the output voltage of the upstream AC-DC adapter that is, in turn, the input voltage of
the L6924D. If the battery voltage is lower than a set pre-charge voltage (V
PRETH
), the pre-
charge phase takes place. The battery is pre-charged with a low current I
PRE
(
Chapter 7.2 on
page 18
).
When the battery voltage goes higher than V
PRETH
, the battery is charged with the Fast Charge
current I
CHG
, set with an external resistor (
Chapter 7.4 on page 19
).
Finally, when the battery voltage is close to the regulated output voltage V
OPRGTH
(4.1V or
4.2V), the voltage regulation phase takes place and the charging current is reduced. The
charging process usually is terminated when the charging current reaches a set value or when
a charging timer expires (
Chapter 7.9 on page 23
).
Figure 6
shows the different phases.
Figure 6.
Typical charge curves in linear mode
End
Charge
Voltage-Regulation
Phase
Power dissipation
Pre-Charge
Phase
Fast-Charge
Phase
I
PRETH
I
CHG
V
OPRGTH
Battery Voltage
Charge Current
Adapter Voltage
V
ADP
V
PRETH
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6924U 功能描述:電池管理 USB Battery Charger System w/integra 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
L6924U013TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer
L6924UTR 功能描述:電池管理 Battery Charger USB Compatible 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
L6925 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
L6925013TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
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