AAT2513
Dual 600mA Step-Down
Converter with Synchronization
Electrical Characteristics
Line Regulation
(V
OUT
= 1.8V; L = 2.2µH)
1.0
0.5
2.0
1.5
Line Regulation
(V
OUT
= 1.5V; L = 2.2µH)
Accuracy (%)
0.0
-0.5
-1.0
-1.5
-2.0
2.5
Accuracy (%)
I
OUT
= 0.1mA to 100mA
1.0
0.5
0.0
-0.5
-1.0
-1.5
I
OUT
= 0.1mA to 100mA
I
OUT
= 400mA
I
OUT
= 400mA
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Input Voltage (V)
Output Voltage Ripple
(V
OUT
= 1.8V; V
IN
= 3.6V; Load = 1mA)
Output Voltage Ripple
(V
OUT
= 1.8V; V
IN
= 3.6V; Load = 600mA)
Inductor Current (bottom) (A)
Inductor Current (bottom) (A)
Output Voltage (top) (V)
Output Voltage (top) (V)
1.85
1.80
1.75
1.82
1.80
1.78
0.2
0.1
0.0
-0.1
0.7
0.6
0.5
0.4
Time (10µs/div)
Time (0.2µs/div)
Input Ripple
(C
IN
= 2 x 10µF; V
IN
= 3.6V; V
OUT1
= 1.8V; V
OUT2
= 2.5V;
°
I
OUT1,2
= 600mA; 0° Phase Shift; PS = Low)
3.62
3.61
3.60
3.59
LX2
4
LX1
2
0
-2
3.61
Input Ripple
(C
IN
= 2 x 10µF; V
IN
= 3.6V; V
OUT1
= 1.8V;
°
V
OUT2
= 2.5V; I
OUT1,2
= 600mA; 180° Phase Shift)
Input Voltage (top) (V)
Input Voltage (top) (V)
3.60
3.59
LX2
Switching Voltage
LX1,LX2 (V)
Switching Voltage
LX1,LX2 (V)
4
LX1
2
0
-2
Time (0.2µs/div)
Time (0.2µs/div)
2513.2007.04.1.1
9
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
