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參數(shù)資料
| 型號： | MB3893A |
| 廠商： | Fujitsu Limited |
| 英文描述： | Power Management IC for Mobile Phone |
| 中文描述： | 電源管理IC的移動電話 |
| 文件頁數(shù)： | 27/44頁 |
| 文件大?。?/td> | 496K |
| 代理商： | MB3893A |
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MB3893A
27
I
SETTING THE OSCILLATOR PERIOD
The oscillator period is set by connecting a timing capacitor (C
OSC
) to the COSC terminal (pin 44), and a timing
resistor (R
OSC
) to the ROSC terminal (pin 45).
Oscillator period : t
OSC
(
μ
s) : 1.073
×
10
3
×
{C
OSC
(pF)
+
C
P
(pF) }
×
R
OSC
(k
)
C
P
: Board capacitor : 19 (pF)
I
SETTING THE OVER DISCHARGE RECOVERY CHARGE TIME
When battery voltage is less than the preliminary charge start voltage (2.115 V (Typ.)), the over discharge
recovery charge time is set by the following formula.
Over discharge recovery charge time : t
RECO
(s) : T
OSC
(s)
×
2
21
I
PRELIMINARY CHARGE TIME
When battery voltage is higher than the preliminary charge start voltage (2.115 V (Typ.)), and lower than the
fast charge start voltage (3.115 V (Typ.)), the preliminary charge time is set by the following formula.
t
OSC
(s)
×
2
27
60
I
RAPID CHARGE TIME
When battery voltage is higher then the fast charge start voltage (2.115 V (Typ.)), and lower than the overvoltage
stop voltage (4.325 V (Typ.)), the rapid charging time is determined by the following formula.
Preliminary charge time : t
PC
(min) :
Rapid charging time : t
FT
(min) : t
OSC
(s)
×
(2
27
+
2
28
+
2
29
+
2
30
)
60
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參數(shù)描述 |
|---|---|
| MB3893APFT | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:Power Management IC for Mobile Phone |
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