PRODUCT DATASHEET
AAT2552178
SystemPowerTM
Total Power Solution for Portable Applications
Typical Characteristics–LDO Regulator
Line Transient Response
(IOUT = 300mA)
Load Transient Response
(1mA to 300mA; VIN = 5.0V; VOUT = 3.3V)
3.40
3.6
3.4
3.2
3.35
VOUT
VOUT
3.30
5.0
4.5
VIN
0.4
0.2
0.0
-0.2
4.0
IL
Time (100µs/div)
Time (100µs/div)
Turn-Off Response Time
(VIN = 4.2V; IOUT = 300mA)
Turn-On Time From Enable
(VIN = 4.2V; IOUT = 300mA)
VEN = 2V/div
VEN = 2V/div
VOUT = 1V/div
VOUT = 1V/div
Time (50µs/div)
Time (100µs/div)
LDO Output Noise
(COUT = 4.7µF; IOUT = 10mA; RLOAD = 330; 98.33µVrms)
10000
1000
100
10
0.01
0.1
1
10
100
1000
Frequency (kHz)
w w w . a n a l o g i c t e c h . c o m
2552.2008.02.1.2
13
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
