PRODUCT DATASHEET
AAT2113A
SwitchReg
TM
3MHz, Fast Transient 1.5A Step-Down Converter in 2mm x 2mm Package
Typical Characteristics
Soft Start
Enable Voltage (top) (1V/div)
Output Voltage (middle) (1V/div)
4
3
Soft Start
Enable Voltage (top) (1V/div)
Output Voltage (middle) (1V/div)
(V
OUT
= 1.8V;
V
IN
= 3.3V;
I
OUT
= 1A)
4
3
(V
OUT
= 1.2V;
V
IN
= 3.3V;
I
OUT
= 1A)
Inductor Current
(bottom) (1A/div)
Inductor Current
(bottom) (1A/div)
2
1
0
2
1
0
-1
2
1
0
2
1
0
-1
Time (100µs/div)
Time (2ms/div)
Output Voltage Ripple
(V
OUT
= 1.2V;
V
IN
= 3.3V;
I
OUT
= 1mA)
1.21
1.81
Output Voltage Ripple
(V
OUT
= 1.8V;
V
IN
= 3.3V;
I
OUT
= 1mA)
Inductor Current
(bottom) (100mA/div)
Inductor Current
(bottom) (100mA/div)
Output Voltage
(top) (10mV/div)
Output Voltage
(top) (10mV/div)
1.20
1.19
0.3
0.2
0.1
0
-0.1
-0.2
1.80
1.79
0.3
0.2
0.1
0
-0.1
-0.2
Time (10µs/div)
Time (10µs/div)
Output Voltage Ripple
(V
OUT
= 1.2V;
V
IN
= 3.3V;
I
OUT
= 1.5A)
1.22
1.82
Output Voltage Ripple
(V
OUT
= 1.8V;
V
IN
= 3.3V;
I
OUT
= 1.5A)
Inductor Current
(bottom) (500mA/div)
Inductor Current
(bottom) (500mA/div)
Output Voltage
(top) (20mV/div)
1.18
2.0
1.5
1.0
0.5
Output Voltage
(top) (20mV/div)
1.20
1.80
1.78
2.0
1.5
1.0
Time (200ns/div)
Time (200ns/div)
8
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2113A.2009.06.1.1
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