PRODUCT DATASHEET
AAT1130
SwitchReg
TM
Typical Characteristics
Switching Frequency vs. Output Voltage
(I
OUT
= 500mA)
Switching Frequency (MHz)
3.75
1.90
2.5MHz 500mA Step-Down DC/DC Converter
Load Transient
(V
OUT
= 1.8V Fixed; V
IN
= 3.6V; C
OUT
= 4.7µF; L = 1.5µH)
1.6
1.4
1.2
1.0
0.8
500mA
0.6
0.4
10mA
0.2
0
Output Voltage (top) (V)
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
3.25
Output Current
(bottom) (A)
2.75
2.25
1.75
1.25
0.6
0.9
1.2
1.5
1.8
Output Voltage (V)
Time (5µs/div)
Load Transient
(V
OUT
= 1.8V Fixed; V
IN
= 3.6V; C
OUT
= 4.7µF; L = 1.5µH)
1.90
0.8
1.90
Load Transient
(V
OUT
= 1.8V; V
IN
= 3.6V; C
OUT
= 4.7µF; C
FF
= 100pF; L = 1.5µH)
0.8
0.7
0.6
0.5
0.4
300mA
1.65
1.60
1.55
1.55
100mA
0.1
0.0
0.3
0.2
Output Voltage (top) (V)
Output Voltage (top) (V)
1.85
1.80
1.75
1.70
300mA
1.65
1.60
100mA
1.55
1.50
0.7
1.85
1.80
1.75
1.70
Output Current
(bottom) (A)
Output Current
(bottom) (A)
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Time (5µs/div)
Time (5µs/div)
Load Transient
(V
OUT
= 1.8V; V
IN
= 3.6V; C
OUT
= 4.7µF; L = 1.5µH)
1.90
0.8
0.7
0.6
0.5
0.4
300mA
1.65
1.60
100mA
1.55
1.50
0.1
0
0.3
0.2
1.90
Load Transient
(V
OUT
= 1.8V; V
IN
= 3.6V; C
OUT
= 4.7µF; C
FF
= 100pF; L = 1.5µH)
1.6
1.4
1.2
1.0
0.8
500mA
0.6
0.4
10mA
0.2
0
Output Voltage (top) (V)
1.85
1.80
1.75
1.70
Output Voltage (top) (V)
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
Output Current
(bottom) (A)
Output Current
(bottom) (A)
Time (5µs/div)
Time (5µs/div)
8
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1130.2008.08.1.1
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