Dual 400mA High Frequency Buck Converter
Typical Characteristics
EN1 = V
IN
; EN2 = GND.
Line Response
(V
OUT
= 1.8V @ 400mA)
AAT2512
Output Ripple
(V
IN
= 3.6V; V
OUT
= 1.8V; I
OUT
= 1mA)
Output Voltage (AC coupled)
(top) (mV)
1.82
1.81
6.0
5.5
40
20
0
-20
-40
-60
-80
-100
-120
0.30
V
O
0.25
Inductor Current
(bottom) (A)
Output Voltage
(top) (V)
0.20
0.15
0.10
Input Voltage
(bottom) (V)
1.80
1.79
1.78
1.77
1.76
5.0
4.5
4.0
3.5
3.0
I
L
0.05
0.00
-0.05
-0.10
Time (25μs/div)
μ
Time (10µs/div)
Output Ripple
(V
IN
= 3.6V; V
OUT
= 1.8V; I
OUT
= 400mA)
Output Voltage (AC coupled)
(top) (mV)
40
20
0
-20
-40
-60
-80
-100
-120
0.9
V
O
0.8
Inductor Current
(bottom) (A)
0.7
0.6
0.5
0.4
0.3
I
L
Time (500ns/div)
0.2
0.1
8
2512.2006.06.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
