Datasheet

LTC3230
5
3230fa
TYPICAL PERFORMANCE CHARACTERISTICS
1.5x Mode CPO Voltage
vs Load Current
2x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(2V
IN
– V
CPO
)/I
CPO
2x Mode CPO Voltage
vs Load Current
MLED/SLED Pin Dropout Voltage
vs MLED/SLED Pin Current
Oscillator Frequency
vs V
IN
Voltage
V
IN
Shutdown Current
vs V
IN
Voltage
1x Mode No-Load V
IN
Current vs
V
IN
Voltage
1.5x Mode Supply Current vs I
CPO
(I
VIN
– 1.5I
CPO
)
2x Mode Supply Current vs I
CPO
(I
VIN
– 2I
CPO
)
LOAD CURRENT (mA)
0
3.6
CPO VOLTAGE (V)
3.8
4.0
4.2
4.4
4.6
4.8
50 100 150 200
3230 G07
V
IN
= 3.3V
V
IN
= 3.4V
V
IN
= 3.5V
V
IN
= 3.6V
V
IN
= 3V
V
IN
= 3.2V
V
IN
= 3.1V
C1 = C2 = C6 = 1μF
TEMPERATURE (°C)
–40
6
RESISTANCE (Ω)
7
8
9
10
11
12
–15 10 35 60
3230 G08
85
V
IN
= 3V
V
CPO
= 4.8V
C1 = C2 = C6 = 1μF
LOAD CURRENT (mA)
0
CPO VOLTAGE (V)
4.7
4.8
4.9
200
3230 G09
4.6
4.5
4.2
50
100
150
4.4
4.3
5.1
5.0
V
IN
= 3.1V
V
IN
= 3V
C1 = C2 = C6 = 1μF
V
IN
= 3.5V
V
IN
= 3.3V
V
IN
= 3.2V
V
IN
= 3.6V
V
IN
= 3.4V
MLED/SLED PIN CURRENT (mA)
0
MLED/SLED DROPOUT VOLTAGE (mV)
60
80
100
15
25
3230 G10
40
20
0
510 20
120
140
160
V
IN
= 3.6V
V
IN
(V)
2.7
800
FREQUENCY (kHz)
840
880
920
3.2
3.7
4.2 4.7
3230 G11
5.2
960
1000
820
860
900
940
980
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
V
IN
(V)
2.7
0
V
IN
CURRENT (μA)
1.0
1.5
2.0
2.5
3.0
3.5
3.7
4.7
3230 G12
4.0
4.5
5.0
0.5
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
V
IN
(V)
2.8
400
V
IN
CURRENT (μA)
420
460
480
500
4.4
580
3230 G13
440
3.6
3.2
4.8 5.2
4
520
540
560
R
SET
= 17.4k
LOAD CURRENT (mA)
0
7
V
IN
= 3.6V
6
5
4
3
2
1
0
3230 G14
50
100 150
SUPPLY CURRENT (mA)
LOAD CURRENT (mA)
0
SUPPLY CURRENT (mA)
2
3
3230 G15
1
0
50
100
V
IN
= 3.6V
150
5
4