Data sheet – Diodes AP2122 User Manual
Page 16

Data Sheet
16
May. 2010 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2122
Typical Performance Characteristics (Continued)
∆
V
OUT
(0
.05
V/D
iv)
V
IN
(1
V
/D
iv
)
Figure 16. Line Transient
(Conditions: I
OUT
=30mA, C
IN
=1
µF, C
OUT
=1
µF)
Time (40
µs/Div)
AP2122-1.5
0
2.5
3.5
0.05
Figure 18. Load Transient
(Conditions: V
IN
=2.5V, C
IN
=1
µF, C
OUT
=1
µF)
V
OU
T
(
0.1
V/
Div)
I
OU
T
(5
0m
A/
Div)
Time (200
µs/Div)
AP2122-1.5
0
100
1.5
1.4
AP2122-3.0
Figure 17. Line Transient
(Conditions: I
OUT
=30mA, C
IN
=1
µF, C
OUT
=1
µF)
AP2122-3.0
Time (200
µs/Div)
Figure 19. Load Transient
(Conditions: V
IN
=4V, C
IN
=1
µF, C
OUT
=1
µF)
Time (20
µs/Div)
-0.05
4.5
∆
V
OUT
(0
.0
5
V
/D
iv
)
V
IN
(1
V
/D
iv
)
0
4
5
0.05
-0.05
6
1.6
50
I
OU
T
(1
00
mA
/D
iv)
0
200
3.0
2.9
3.1
100
V
OUT
(
0.1
V/D
iv)
5.5
-0.1
-0.1
7
1.7
-50
3.2
-100
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