AIC1633
AIC1633A (continued)
PIN 7: LBI - The non-inverting input of the
PIN 8: VOUT- The output voltage feedbacks to
the IC through this pin. If output
voltage was externally set, the
VOUT pin can be tied to any low
impedance node with voltage
between the external power switch
threshold and 7V
battery low detector, of which the
inverting
connects
reference.
input
to
is
internally
voltage
1.22V
ꢀ APPLICATION EXAMPLES
95
90
+VOUT
+VIN
(+3V)
470Ω
VIN=3.0V
R1
85
VOUT
LBI
ILIM/SD
+
L1
VIN=2.2V
22µF
LOAD
80
82µH
VIN
C1
VIN=2.0V
LBO
75
SW
VIN=1.8V
70
CGND
SGND
+
1N5819
D1
C2
65
AIC1633-3
0
30
60
90
120
150
22µF
Load Current (mA)
Fig. 1
3V Output Step-Up Converter
+VOUT
95
90
+VIN
(+5V)
470Ω
R1
VIN=4.5V
VOUT
LBI
ILIM/SD
VIN
+
85
80
75
70
65
22µF
L1
LOAD
VIN=3.0V
VIN=2.2V
C1
82µH
LBO
SW
VIN=1.8V
CGND
SGND
+
AIC1633-5
1N5819
D1
22µF
C2
0
20
40
60
120
140
160
Load Cu8r0rent (1m00A)
Fig. 2
5V Output Step-Up Converter
7
AIC [ ANALOG INTERGRATIONS CORPORATION ]
