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LTC3230
TYPICAL PERFORMANCE CHARACTERISTICS
2x Mode Charge Pump Open-Loop
1.5x Mode CPO Voltage
vs Load Current
Output Resistance vs Temperature
(2V IN – V CPO )/I CPO
2x Mode CPO Voltage
vs Load Current
4.8
4.6
C1 = C2 = C6 = 1 μ F
V IN = 3.3V
V IN = 3.4V
12
11
V IN = 3V
V CPO = 4.8V
C1 = C2 = C6 = 1 μ F
5.1
5.0
4.9
C1 = C2 = C6 = 1 μ F
V IN = 3.6V
4.4
V IN = 3.5V
10
4.8
4.2
4.0
3.8
V IN = 3.2V
V IN = 3.1V
V IN = 3V
V IN = 3.6V
9
8
7
4.7
4.6
4.5
4.4
4.3
V IN = 3.5V
V IN = 3.4V
V IN = 3.3V
V IN = 3.2V
V IN = 3.1V
V IN = 3V
3.6
0
50 100 150
200
6
–40
–15
10 35
60
85
4.2
0
50
100
150
200
LOAD CURRENT (mA)
3230 G07
MLED/SLED Pin Dropout Voltage
vs MLED/SLED Pin Current
TEMPERATURE ( ° C)
Oscillator Frequency
vs V IN Voltage
3230 G08
LOAD CURRENT (mA)
V IN Shutdown Current
vs V IN Voltage
3230 G09
160
140
120
100
V IN = 3.6V
1000
980
960
940
920
T A = 85 ° C
5.0
4.5
4.0
3.5
3.0
T A = 25 ° C
T A = 85 ° C
T A = –40 ° C
80
60
40
20
900
880
860
840
820
T A = 25 ° C
T A = –40 ° C
2.5
2.0
1.5
1.0
0.5
0
0
5
10
15
20
25
800
2.7
3.2
3.7
4.2
4.7
5.2
0
2.7
3.7
4.7
MLED/SLED PIN CURRENT (mA)
3230 G10
1x Mode No-Load V IN Current vs
V IN Voltage
V IN (V)
3230 G11
1.5x Mode Supply Current vs I CPO
(I VIN – 1.5I CPO )
V IN (V)
3230 G12
2x Mode Supply Current vs I CPO
(I VIN – 2I CPO )
580
560
R SET = 17.4k
7
6
V IN = 3.6V
5
V IN = 3.6V
540
520
5
4
500
480
4
3
3
2
460
2
440
420
1
1
400
2.8
3.2
3.6
4
4.4
4.8
5.2
0
0
50
100
150
0
0
50
100
150
V IN (V)
3230 G13
LOAD CURRENT (mA)
3230 G14
LOAD CURRENT (mA)
3230 G15
3230fa
5
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