AAT3111
MicroPower™ Regulated Charge Pump
Typical Characteristics — AAT3111-3.3
(Unless otherwise noted, V
IN
= 3V, C
IN
= C
OUT
=10µF, C
FLY
= 1µF, T
A
= 25°C)
Output Voltage vs. Output Current
3.40
60
Supply Current vs. Supply Voltage
Output Voltage (V)
3.35
Supply Current (µA)
50
40
30
20
10
0
V
IN
=2.3V
3.30
V
IN
=2.6V
No Load, Switching
V
IN
=2.0V
3.25
V
IN
=1.7V
No Load, Not Switching
3.20
0.01
0.1
1
10
100
1000
1.5
2.0
2.5
3.0
3.5
Output Current (mA)
Supply Voltage (V)
Efficiency vs. Supply Voltage
95%
90%
100%
Efficiency vs. Load Current
5mA
90%
Efficiency (%)
Efficiency (%)
85%
80%
75%
70%
65%
60%
55%
50%
1.8
2.0
50mA
80%
70%
60%
50%
40%
30%
20%
10%
0%
0.01
V
IN
=1.8V
V
IN
=2.0V
V
IN
=2.6V
100mA
2.2
2.4
2.6
2.8
3.0
0.1
1
10
100
Supply Voltage (V)
Load Current (mA)
Startup
0.9
V
SHDN
Threshold vs. Supply Voltage
V
SHDN
Threshold (V)
SHDN (2V/div)
0.8
0.7
0.6
0.5
0.4
1.5
1.7
1.9
2.1
V
IH
I
LOAD
=100mA
V
IN
=2.3V
I
LOAD
=50mA
V
IN
=2.0V
I
LOAD
=25mA
V
IN
=2.0V
V
OUT
(1V/div)
V
IL
2.3
2.5
2.7
2.9
3.1
Time (100µs/div.)
Supply Voltage (V)
3111.2002.3.0.91
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
