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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關(guān)，充電系統(tǒng) |
| 文件頁數(shù)： | 22/38頁 |
| 文件大?。?/td> | 1350K |
| 代理商： | L6924D013TR |
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Applications information: charging process
L6924D
22/38
7.8
Maximum charging time
To avoid the charging of a dead battery for a long time, the L6924D has the possibility can be
set a maximum charging time starting from the beginning of the Fast-Charge Phase. This timer
can be set with a capacitor, connected between the T
PRG
pin and GND. The C
TPRG
is the
external capacitor (in nF) and is given by the following formula:
Note:
The maximum recommended C
TPRG
value must be less than 50 nF.
Figure 16. T
PRG
pin connection
Where,
V
REF
= 1.8V,
K
T
= 279 x 10
5
,
V
BG
= 1.23V, and
T
MAXCH
is the charging time given in seconds.
If the battery does not reach the End-of-Charge condition before the time expires, a fault is
issued.
Also during the Pre-Charge Phase there is a safety timer, given by:
If this timer expires and the battery voltage is still lower than V
PRETH
, a fault signal is generated,
and the charge process is terminated.
9
10
×
×
=
REF
PRG
BG
T
MAXCH
K
TPRG
V
R
V
T
C
Eq: 8-6
T
PRG
L6924D
C
TPRG
MAXCH
T
MAXPRECH
T
×
=
8
1
Eq: 8-7
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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 |
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| 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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