AAT2554
Total Power Solution for Portable Applications
Typical Characteristics – LDO Regulator
LDO Turn-On Time from Enable
(VIN Present)
LDO Initial Power-Up Response Time
6
5
4
3
2
1
0
4
3
2
1
0
7
6
5
4
3
2
1
0
6
5
4
3
2
1
0
Time (5µs/div)
Time (50µs/div)
Turn-Off Response Time
(I = 100mA)
Line Transient Response
6
5
4
3
2
1
0
3.04
3.03
3.02
3.01
3.00
2.99
2.98
VEN (5V/div)
VIN
VOUT
VOUT (1V/div)
Time (50µs/div)
Time (100µs/div)
Load Transient Response 300mA
Load Transient Response
2.90
2.85
2.80
2.75
2.70
2.65
2.60
500
400
300
200
100
0
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
800
700
600
500
400
300
200
100
0
VOUT
VOUT
IOUT
IOUT
-100
-100
Time (100µs/div)
Time (10µs/div)
14
2554.2007.01.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
