AIC1631 AIC [Analog Intergrations Corporation], AIC1631 Datasheet - Page 7

• Manufacturer Part Number: AIC1631
• Description: 2-Cell, 500mA, Step-Up DC/DC Converter
• Manufacturer: AIC [Analog Intergrations Corporation]

APPLICATION EXAMPLES
AIC1631A (continued)
PIN 7: LBI
PIN 8: VOUT- The output voltage feedbacks to
+V
(+3V)
+V
(+5V)
LOAD
LOAD
OSCON
OSCON
OUT
100µF
OUT
100µF
C3
C3
+
+
+V
+V
- The noninverting input of the
IN
IN
battery low detector, of which the
inverting input is internally con-
nects to 1.22V voltage reference.
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
+
+
1N5819
D1
1N5819
D1
100µF
C2
100µF
C2
22Ω
22Ω
R1
R1
+
+
47µF
47µF
C1
C1
Fig. 2 5V Output Step-Up Converter
27K
27K
R2
R2
Fig. 1 3V Output Step-Up Converter
ILIM/SD
VIN
SW
SGND
ILIM/SD
VIN
SW
SGND
AIC1631-3
AIC1631-5
CGND
CGND
VOUT
VOUT
LBO
LBO
LBI
LBI
95
90
85
80
75
90
85
80
75
0
0
V
IN
V
100
=2.0V
IN
100
=2.2V
V
IN
=1.8V
200
200
Load Current (mA)
Load Current (mA)
V
IN
300
=2.5V
300
400
AIC1631
400
V
V
V
V
V
500
IN
IN
IN
IN
IN
V
=2.0V
V
=2.2V
V
=3.0V
=2.5V
V
=3.3V
IN
IN
IN
IN
=3.0V
=5.0V
=4.5V
=4.0V
500
600
700
600
7