PRODUCT DATASHEET
AAT2146
SwitchReg
TM
Typical Characteristics
Output Ripple
(V
OUT
= 1.8V; V
IN
= 3.6V; I
OUT
= 1mA; C
FF
= 0pF)
0.02
0.35
0.02
Low Noise, Fast Transient 600mA Step-Down Converter
Output Ripple
(V
OUT
= 1.8V; V
IN
= 3.6V; I
OUT
= 400mA; C
FF
= 0pF)
1.4
1.2
Output Voltage (top) (V)
Output Voltage (top) (V)
0.01
0
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
0.3
0.01
0
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
Inductor Current
(bottom) (A)
Inductor Current
(bottom) (A)
0.25
0.2
0.15
0.1
0.05
0
-0.05
1
0.8
0.6
0.4
0.2
0
-0.2
Time (10µs/div)
Time (200ns/div)
Soft Start
(V
IN
= 3.6V; V
OUT
= 1.8V; I
OUT
= 400mA)
Enable Voltage (top) (V)
Output Voltage (middle) (V)
4
3
2
1
0
Input Current (bottom) (A)
0.5
0
-0.5
Time (100µs/div)
8
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2146.2008.10.1.2
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