Datasheet

16
LTC1693
TYPICAL APPLICATIONS
U
Charge Pump Doubler
Output Voltage
Efficiency
3
4
8
V
CC
= 5V
V
CC
= 5V
C1
680pF
C2
1µF
C3
1µF
+
C
L
47µF
1693 TA07a
V
OUT
R1, C1 SET THE OSCILLATION FREQUENCY AT 150kHz
AND THE DUTY CYCLE AT 35%
R1
11k
1%
D2
1N5817
D1
1N5817
71
LTC1693-3
OUTPUT CURRENT (mA)
0
OUTPUT VOLTAGE (V)
4
8
12
2
6
10
20 40 60 80
1693 TA07b
10010030507090
V
CC
= 5V
OUTPUT CURRENT (mA)
0
EFFICIENCY (%)
60
80
100
40
1693 TA07c
40
20
0
10
20
30
50
90
60
70
80
100
V
CC
= 5V