Datasheet
Table Of Contents

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