PRODUCT DATASHEET
AAT2120
SwitchReg
TM
Typical Characteristics
Output Ripple
(V
IN
= 3.6V; V
OUT
= 1.8V; I
OUT
= 1mA)
Output Voltage (AC Coupled)
(top) (mV)
Output Voltage (AC Coupled)
(top) (mV)
40
20
0
-20
-40
-60
-80
-100
-120
0.14
40
20
0
-20
-40
-60
-80
-100
-120
0.12
500mA Low Noise Step-Down Converter
Output Ripple
(V
IN
= 3.6V; V
OUT
= 1.8V; I
OUT
= 500mA)
1.0
V
O
V
O
0.9
Inductor Current
(bottom) (A)
Inductor Current
(bottom) (A)
0.10
0.08
0.06
0.04
0.8
0.7
I
LX
0.6
0.5
0.4
0.3
0.2
I
LX
0.02
0.00
-0.02
Time (2µs/div)
Time (200ns/div)
8
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2120.2008.02.1.2