PRODUCT DATASHEET
AAT1130
TM
SwitchReg
2.5MHz 500mA Step-Down DC/DC Converter
Typical Characteristics
Load Transient
Load Transient
(VOUT = 1V; VIN = 3.6V; COUT = 4.7µF; L = 1µH)
(VOUT = 1V; VIN = 3.6V; COUT = 4.7µF; CFF = 100pF; L = 1µH)
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
500mA
400mA
100mA
10mA
Time (5µs/div)
Time (5µs/div)
Load Transient
Soft-Start
(VOUT = 1V; VIN = 3.6V; COUT = 4.7µF; L = 1µH)
(VOUT = 1.8V Fixed; VIN = 3.6V; COUT = 4.7µF; L = 1.5µH)
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
1.6
(2V/Div)
0V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3.6V
1.8V
(1V/Div)
0V
500mA
200mA
(100mA/Div)
0mA
10mA
Time (5µs/div)
Time (100µs/div)
Line Transient
(VOUT = 1.8V Fixed; COUT = 4.7µF; L = 1.5µH)
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
6.6
6.1
5.6
5.1
4.6
4.1
3.6
3.1
2.6
Time (10µs/div)
w w w . a n a l o g i c t e c h . c o m
10
1130.2009.03.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
