AIC1633-3CN 查看數據表（PDF） - Analog Intergrations
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AIC1633-3CN Datasheet PDF : 10 Pages
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AIC1633
APPLICATION EXAMPLES (CONTINUED)
+VOUT
(+3V)
+VIN
470Ω
R1
LOAD
1N5819
D1
+
L1
100µH
10µF
C1
+
22µF
C2
Start-Up VIN Voltage = 1.4V
Fig. 3
ILIM/SD
VIN
SW
SGND
VOUT
LBI
LBO
CGND
AIC1633-3
85
VIN=1.6V
80
VIN=1.4V
75
VIN=1.0V
VIN=0.8V
VIN=1.2V
70
65
60 0
5
10
15
20
25
30
35
Load Current (mA)
1-Cell Input 3V Output Step-Up Converter
+VIN
470Ω
R1
10K
RILIM
150µH
L1
+
C2
10µF
ILIM/SD
VIN
SW
VOUT
LBI
LBO
+
C1
22µF
1N5819
D1
SGND
CGND
AIC1633-5
2SB1424
Q1
15K
+VOUT
(+5V)
R5
R2
3.3K
R3
62K
+ C4
10µF
20K
LOAD
R4
90
85
VIN=6V
80
VIN=3V
VIN=3.5V
VIN=5V
VIN=4.5V
VIN=4V
75
VIN=7V
700 20 40 60 80 100 120 140 160 180 200 220 240
Load Current (mA)
Fig. 4 4-Cell Input Step-Up/ Step-Down Converter
+VIN
10µF +
C2
2SB1424
Q1
1K
R1
1K
R2 1K
R3
+ 10µF
C1
1N5819
D1
82µH
L1
ILIM/SD
VIN
SW
VOUT
LBI
LBO
SGND
CGND
AIC1633-3
VOUT Ripple May Be Large at VIN=3V Condition
+VOUT
(+3V)
33K R4
+
22µF
C3
24K
LOAD
R5
100
VIN=3V
95
90
VIN=4V
VIN=5V
85
80
VIN=7V
VIN=6V
75 0 20 40 60 80 100 120 140 160 180 200 220
Load Current (mA)
Fig. 5 3-Cell Input 3V Output Step-Down Converter
8
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