AME
AME8848
Ground Current vs. Input Voltage
45
40
1A CMOS LDO
Load Step (1mA-1000mA)
I
O UT
(500mA/DIV) V
OUT
(10mV/DIV)
C
OUT
= 2.2µF
C
IN
= 2.2µF
Ground Current (µA)
35
30
25
20
15
10
5
0
0
1
2
3
4
85
O
C
V
OUT
25 C
O
I
OUT
5
6
7
8
Input Voltage (V)
Time (20mS/DIV)
Dropout Voltage vs. Output Voltage
1600
1400
0
Power Supply Ripple Rejection Ratio
-10
-20
Dropout Voltage (mV)
1200
1000
800
600
400
200
0
1.8
PSRR (dB)
Top to Bottom
I
OUT
= 1000mA
I
OUT
= 800mA
I
OUT
= 600mA
I
OUT
= 400mA
I
OUT
= 200mA
C
OUT
= 2.2µF Tantalum
100mA
-30
-40
-50
-60
-70
-80
10
100mA
10mA
100
µ
A
1K
100
µ
A
100K
1mA
10M
2.5
3.3
4
5
Output Voltage (V)
Frequency (Hz)
Line Transient Response
V
IN
(1V/DIV)
Noise Measurement
V
IN
= 5.0V
C
OUT
= 2.2µF
V
OUT
(1mV/DIV)
C
OUT
= 2.2µF
No Filter
V
OUT
(1mV/DIV)
Time (2mS/DIV)
Time (20ms/DIV)
Rev.A.04
7
AMETHERM [ AMETHERM CIRCUIT PROTECTION THERMISTORS ]
