AIC1631 Datasheet, PDF (8/10 Pages) Analog Intergrations Corporation – 2-Cell, 500mA, Step-Up DC/DC Converter

AIC1631
APPLICATION EXAMPLES (CONTINUED)
+V_OUT
(+3V)
+V_IN
100Ω
R1
LOAD
47µF
L1
100µF ⁺
C2
1N5819
D1
+ _C1
10µF
ILIM/SD
VIN
VOUT
LBI
SW
SGND
LBO
CGND
AIC1631-3
80
V_IN=1.4V
V_IN=1.6V
75
70
V_IN=1.0V
V_IN=1.2V
65 ₀
2
4
6
8
10
12
Load Current (mA)
Fig. 3 1-Cell Input 3V Output Step-Up Converter
+V_OUT
(+5V)
+V_IN
R1
100Ω
LOAD
47µH
L1
1N5819
D1
+
100µF
C2
+
10µF
C1
ILIM/SD
VIN
VOUT
LBI
SW
SGND
LBO
CGND
AIC1631-5
80
75
VIN=1V
V_IN=1.6V
V_IN=1.4V
V_IN=1.2V
70
65 ₀
2
4
6
8
10
12
Load Current (mA)
Fig. 4 1-Cell Input 5V Output Step-Up Converter
+V_IN
500µH
L1
100Ω
27K
R1
R2
+
+
C1
C2
220µF 10µF
+
100µF
C2
1N5819
D1
ILIM/SD
VIN
VOUT
LBI
SW
LBO
SGND
CGND
AIC1631-5
2SB1424
Q1
15K
+V_OUT
(+5V)
R5
RB
12K
62K
R3
+
100µF
C4
20K
R4
LOAD
94
90
86
82
V_IN=6V
78
V_IN=5V
V_IN=4V
VIN=3V
74
70
V_IN=7V
66
62
V_IN=8V
58 ₀
50
100 150 200 250 300 350 400
Load Current (mA)
Fig. 5 4-Cell Input Step-Up / Step-Down Converter
8