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參數(shù)資料
| 型號(hào)： | MB3885 |
| 廠商： | Fujitsu Limited |
| 英文描述： | 1-channel DC/DC Converter IC with Synchronous Rectifier |
| 中文描述： | 1通道DC / DC變換器的同步整流集成電路 |
| 文件頁數(shù)： | 21/29頁 |
| 文件大?。?/td> | 239K |
| 代理商： | MB3885 |
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MB3885
21
I
PRECAUTIONS RELATED TO SUPPLY VOLTAGE RANGE
Although the supply voltage range listed under recommended operating requirements is 5.5V-18V, generation
of heat limits the maximum operating supply voltage since the IC’s internal loss varies with the frequency of
oscillation and FET’s total gate charge. When using the MB 3885 in an application, caution must be taken in
relation to supply voltage range.
As shown below, I
B
(average current) can be determined from the total gate charge Qg
1
, Qg
2
, charged from the
gate capacitance (C
iss1
, C
iss2
, C
rss1
, C
rss2
) of the external FET Q1, Q2, by the following formula.
Because IC current consumption other than I
B
is 6.5 mA, power consumption can be determined from the
following formula.
Power consumption : Pc
Pc (W) : 0.0065
×
V
CC
+
V
CC
×
I
B
1
/
2
×
V
B
×
I
B
I
B
(A)
=
I
1
+
I
2
=
Ibias
1
×
T1
T
+
Qg
1
T
+
Ibias
2
×
T2
T
+
Qg
2
T
(Ibias
1
=
Ibias
2
: 2 mA)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MB3885PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:1-channel DC/DC Converter IC with Synchronous Rectifier |
| MB3885PFV-G-BND(E1) | 制造商:Fujitsu 功能描述: |
| MB3886 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2-Channel DC/DC Converter IC with Overcurrent Protection Symmetrical-Phase Type |
| MB3886PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2-Channel DC/DC Converter IC with Overcurrent Protection Symmetrical-Phase Type |
| MB3887 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:DC/DC Converter IC for Charging Li-ion battery |
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