AAT2820 Datasheet, PDF (6/18 Pages) Advanced Analogic Technologies – Triple-Output Charge Pump Regulator

AAT2820
Triple-Output Charge Pump Regulator
Typical Characteristics
V_IN = 3.3V, V_OUT = 5V, V_POS = 12.5V, V_NEG = -7.8V, C_IN = C_FLY = 1µF, C_OUT = 4.7µF; T_A = 25°C, unless otherwise noted.
Reference Voltage vs. Temperature
1.22
1.21
1.20
1.19
1.18
1.17
-40
-20
0
20
40
60
80
100
Temperature (°C)
Positive Charge Pump Output
Voltage vs. Temperature
(No Load at V_NEG and V_OUT)
12.70
12.65 ^{VPOS = 12.5V}
12.60
12.55
I_POS = 5mA
12.50
12.45
I_POS = 15mA
12.40
12.35
12.30
-40
-20
0
20
40
60
80
100
Temperature (°C)
12.5
12.4
12.3
12.2
12.1
12
0
Positive Charge Pump Output
Voltage vs. Output Current
(No Load at V_NEG and V_OUT)
V_IN = 4.2V
V_IN = 2.7V
V_IN = 3.3V
5
10
15
20
25
30
Output Current (mA)
Positive Charge Pump Efficiency
vs. Output Current
(No Load at V_NEG and V_OUT)
80
V_IN = 2.7V
70
V_IN = 3.0V
60
V_IN = 3.3V
50
40
V_IN = 4.2V
30
20
0
5
10
15
20
25
30
Output Current (mA)
-7.65
-7.70
-7.75
-7.80
-7.85
-7.90
-7.95
-8.00
-8.05
-8.10
-8.15
-40
Negative Charge Pump Output
Voltage vs. Temperature
(No Load at V_POS and V_OUT)
V_NEG = -7.8V
I_NEG = 5mA
I_NEG = 15mA
-20
0
20
40
60
80
100
Temperature (°C)
6
Negative Charge Pump Output
vs. Output Current
(No Load at V_POS and V_OUT)
-7.6
-7.5
V_IN = 2.7V
-7.4
V_IN = 3.3V
-7.3
V_IN = 4.2V
-7.4
-7.1
0
5
10
15
20
25
30
Output Current (mA)
2820.2006.04.1.4