AAT1130 Datasheet, PDF (8/19 Pages) Advanced Analogic Technologies – 2.5MHz 500mA Step-Down DC/DC Converter

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Typical Characteristics
Switching Frequency vs. Output Voltage
(I_OUT = 500mA)
3.75
3.25
2.75
2.25
1.75
1.25
0.6
0.9
1.2
1.5
1.8
Output Voltage (V)
PRODUCT DATASHEET
AAT1130
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)
1.90
1.6
1.85
1.4
1.80
1.2
1.75
1.0
1.70
0.8
1.65
500mA
0.6
1.60
0.4
1.55
0.2
10mA
1.50
0
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
1.85
0.7
1.80
0.6
1.75
0.5
1.70
0.4
300mA
1.65
0.3
1.60
0.2
100mA
1.55
0.1
1.50
0.0
Time (5µs/div)
Load Transient
(V_OUT = 1.8V; V_IN = 3.6V; C_OUT = 4.7µF; C_FF = 100pF; L = 1.5µH)
1.90
0.8
1.85
0.7
1.80
0.6
1.75
0.5
1.70
0.4
300mA
1.65
0.3
1.60
0.2
100mA
1.55
0.1
1.55
0.0
Time (5µs/div)
Load Transient
(V_OUT = 1.8V; V_IN = 3.6V; C_OUT = 4.7µF; L = 1.5µH)
1.90
0.8
1.85
0.7
1.80
0.6
1.75
0.5
1.70
0.4
300mA
1.65
0.3
1.60
0.2
100mA
1.55
0.1
1.50
0
Time (5µs/div)
Load Transient
(V_OUT = 1.8V; V_IN = 3.6V; C_OUT = 4.7µF; C_FF = 100pF; L = 1.5µH)
1.90
1.6
1.85
1.4
1.80
1.2
1.75
1.0
1.70
0.8
1.65
500mA
0.6
1.60
0.4
1.55
10mA
0.2
1.50
0
Time (5µs/div)
8
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1130.2008.08.1.1