LTC3226
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
LDO Regulation Voltage
vs Temperature
LDO Load Regulation
LDO Supply Regulation
3.310
3.305
3.300
3.295
3.290
3.285
3.280
3.300
3.325
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
CPO = 4V
SET TO 3.3V
I
= 10ꢀA
V
= 5V
= 1mA
OUT
CPO
OUT
V
V
SET TO 3.3V
OUT
I
OUT
3.295
3.290
3.285
3.280
3.275
3.270
3.4
4.0
4.8
5.2
5.0
0.001
0.01
0.1
(A)
1
10
3.6 3.8
4.2 4.4 4.6
35 55
–45 –25 –5 15
TEMPERATURE (°C)
75 95 115
I
CPO VOLTAGE (V)
OUT
3226 G01
3226 G02
3226 G03
LDO FET On-Resistance
vs CPO Voltage and Temperature
LDO Output Transient Step
Response Waveform
Charge Pump Oscillator Frequency
vs VCPO and Temperature
980
960
940
920
900
880
860
840
350
300
250
200
150
100
50
V
= 3.3V
LOAD = 500mA
IN
T = –45°C
T = 25°C
T = 90°C
T = 25°C
V
OUT
50mV/DIV
AC-COUPLED
T = –40°C
1000mA
I
OUT
T = 90°C
500mA
0
3226 G05
500ꢀs/DIV
4.2
CPO VOLTAGE (V)
5.2
3.6
4.0 4.2 4.4
CPO VOLTAGE (V)
4.6 4.8 5.0
2.2
2.7
3.2
3.7
4.7
3.8
3226 G04
3226 G06
Charge Pump Input Current
vs CPO Output Voltage
Charge Pump Charging Current
vs CPO Output Voltage
Charge Pump Input Current
vs VIN with CPO Grounded
400
350
300
250
400
350
300
250
400
390
380
370
360
350
340
330
V
= 3.8V
V
= 3.8V
R
= 33.3k
R
PROG
= 33.3k
IN
R
V
= 33.2k
PROG
CPO
IN
PROG
= 0V
R
= 50k
R
PROG
= 50k
PROG
200
150
200
150
R
= 100k
R
PROG
= 100k
PROG
100
50
0
100
50
0
90°C
25°C
–45°C
2x MODE
4
2x MODE
4
5
1x MODE
2
1x MODE
2
1
1
0
5
0
3
3
3.3
3.6
4.2
(V)
4.5
4.8
5.1
3.9
CPO VOLTAGE (V)
CPO VOLTAGE (V)
V
IN
3226 G07
3226 G08
3226 G09
3226fa
5
Linear Systems [ Linear Systems ]
