參數(shù)資料
型號(hào): MB3881
廠商: Fujitsu Limited
英文描述: 8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down
中文描述: 8通道DC / DC變換器的同步整流集成電路的電壓升壓和降壓
文件頁(yè)數(shù): 36/40頁(yè)
文件大?。?/td> 509K
代理商: MB3881
MB3881
36
I
REFERENCE DATA
(Continued)
95
94
93
92
91
90
89
88
87
86
85
0
50 100 150 200 250 300 350 400 450 500
Load current IL (mA)
Vin
=
2.5 V
Vin
=
3 V
Vin
=
3.6 V
Vin
=
4.2 V
Vin
=
6 V
A
R1
240
C15
2200 pF
Vin
Iin
IL
C37
Q1
V
O
1
(2.0 V)
L2
D1
Q9
1
μ
F
C1
2.2
μ
F
33
μ
H
η
=
×
100 (%)
V
O
1
×
IL
Vin
×
Iin
90
88
86
84
82
80
78
76
74
72
70
0
50 100 150 200 250 300 350 400 450 500
Load current IL (mA)
Vin
=
2.5 V
Vin
=
3 V
Vin
=
3.6 V
Vin
=
4.2 V
Vin
=
6 V
B
R2
75
C16
3900 pF
Vin
Iin
IL
C38
C10
Q2
V
O
2
(2.8 V)
L4
D2
Q10
1
μ
F
C2
2.2
μ
F
2.2
μ
F
15
μ
H
L3
15
μ
H
η
=
×
100 (%)
V
O
2
×
IL
Vin
×
Iin
Conversion efficiency vs. load current
(CH1 : Down conversion method with synchronous rectification)
C
η
%
)
Conversion efficiency vs. load current
(CH2 : Zeta method with synchronous rectification)
C
η
%
)
Ta
=
+
25
°
C
2 V output
VCC (O)
=
Vin
+
2.2 V
VSS (O)
=
Vin
1.8 V
Ta
=
+
25
°
C
2.8 V output
VCC (O)
=
Vin
+
2.2 V
VSS (O)
=
Vin
1.8 V
To OUT1-1
To OUT1-2
To OUT2-1
To OUT2-2
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