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