24V 100mA Step-Up Converter
Typical Characteristics
(V
OUT
= 18V; R3 = 20kΩ)
Ω
2.5
2.0
1.5
0.2
0.1
AAT1232
Line Regulation
Output Voltage Error vs. Temperature
(V
IN
= 5V; V
OUT
= 18V; I
OUT
= 100mA)
Output Error (%)
Accuracy (%)
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
2.5
3
3.5
4
4.5
5
5.5
6
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-40
-15
10
35
60
85
Input Voltage (V)
°
Temperature (°C)
No Load Quiescent Current vs. Input Voltage
(V
OUT
= 18V; EN_High)
0.4
No Load Input Current vs. Temperature
(V
IN
= 3.6V; V
OUT
= 18V)
1.2
1.1
0.9
0.8
0.6
0.5
0.3
0.2
0.0
-40
-15
10
35
60
85
Supply Current (mA)
0.32
0.28
0.24
0.2
0.16
0.12
0.08
2.5
3
3.5
4
4.5
5
5.5
Supply Current (mA)
0.36
Input Voltage (V)
°
Temperature (°C)
Output Ripple
(V
IN
= 4.2V; V
OUT
= 18V; I
OUT
= 100mA)
18.2
18.0
5.0
4.0
3.0
2.0
1.0
0.0
-1.0
18.2
18.0
Output Ripple
(V
IN
= 4.2V; V
OUT
= 18V; No Load)
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
Inductor Current
(bottom) (A)
Inductor Current
(bottom) (A)
Output Voltage
(top) (V)
17.8
17.6
17.4
17.2
17.0
Output Voltage
(top) (V)
17.8
17.6
17.4
17.2
17.0
Time (500ns/div)
Time (100µs/div)
6
1232.2006.12.1.3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
