PRODUCT DATASHEET
AAT1130
TM
SwitchReg
2.5MHz 500mA Step-Down DC/DC Converter
Typical Characteristics
Switching Frequency vs. Output Voltage
Load Transient
(IOUT = 500mA)
(VOUT = 1.8V Fixed; VIN = 3.6V; COUT = 4.7µF; L = 1.5µH)
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3.75
3.25
2.75
2.25
1.75
1.25
500mA
10mA
0.6
0.9
1.2
1.5
1.8
Output Voltage (V)
Time (5µs/div)
Load Transient
Load Transient
(VOUT = 1.8V Fixed; VIN = 3.6V; COUT = 4.7µF; L = 1.5µH)
(VOUT = 1.8V; VIN = 3.6V; COUT = 4.7µF; CFF = 100pF; L = 1.5µH)
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.55
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
300mA
300mA
100mA
100mA
Time (5µs/div)
Time (5µs/div)
Load Transient
Load Transient
(VOUT = 1.8V; VIN = 3.6V; COUT = 4.7µF; L = 1.5µH)
(VOUT = 1.8V; VIN = 3.6V; COUT = 4.7µF; CFF = 100pF; L = 1.5µH)
1.90
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
300mA
500mA
100mA
10mA
Time (5µs/div)
Time (5µs/div)
w w w . a n a l o g i c t e c h . c o m
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1130.2008.08.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
