Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
AP2129
Typical Performance Characteristics (Continued)
V
IN
V
OUT
V
Shutdown
V
OUT
Figure 16. Line Transient
Figure 17. Soft Start Time
(Conditions: IOUT=30mA, CIN=COUT=1µF,
(Conditions: IOUT=0mA, CIN=COUT=1µF,
VIN=4 to 5V, VOUT=3.3V)
VShutdown=0 to 2V, VOUT=3.3V)
100
IOUT=10mA
90
80
70
60
50
40
30
20
10
0
IOUT=300mA
ripple=1Vpp, COUT=1µF, VOUT=0.8V
V
OUT
V
Shutdown
100
1000
10000
100000
Frequency (Hz)
Figure 18. Soft Start Time
Figure 19. PSSR vs. Frequency
(Conditions: IOUT=0mA, CIN=COUT=1µF,
VShutdown=0 to 2V, VOUT=0.8V)
Oct. 2009 Rev. 1.1
BCD Semiconductor Manufacturing Limited
11