User guide

1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940
Data Sheet
14
Sept. 2011 Rev. 2. 4 BCD Semiconductor Manufacturing Limited
Typical Performance Characteristics (Continued)
Figure 17. Load Transient
I
OUT
(0.5A/Div)
∆V
OUT
(0.2V/Div)
C
OUT
=10µF
AZ2940-5.0
0 200 400 600 800 1000
0.01
0.1
1
10
100
Stable Range
Output Capacitor ESR (Ω)
Output Current (mA)
C
OUT
=10µF
V
OUT
=5V
T
A
=25
O
C
Unstable Range
Figure 18. Load Transient
Figure 19. Line Transient
I
OUT
(0.5A/Div)
∆V
OUT
(0.2V/Div)
I
OUT
=10mA
C
OUT
=47µF
AZ2940-5.0
AZ2940-5.0
Figure 16. Output Capacitor ESR vs. Output Current
Time (200 µ s/Div)
0
-0.2
-0.5
0
0.4
0.2
Time (200 µ s/Div)
∆V
IN
(0.5V/Div)
∆V
OUT
(0.02V/Div)
Time (200 µ s/Div)
0.5
1
0
-0.2
-0.5
0
0.4
0.2
0.5
1
0
-0.5
0.02
0.06
0.04
0.5
1
0