TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
AMS2950/1
Dropout Voltage
500
DROPOUT VOLTAGE (mV)
400
300
200
T
J
= 25°C
Short Circuit Current
170
SHORT CIRCUIT CURRENT ( mA)
DROPOUT VOLTAGE (mV)
160
150
140
130
120
110
100
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
600
500
400
300
Dropout Voltage
I
L
= 150mA
~
~
100
50
I
L
= 100µA
100
0
100µA
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
1mA
10mA
OUTPUT CURRENT
150mA
AMS2951 Minimum Operating Voltage
MINIMUM OPERATING VOLTAGE (V)
2.2
2.1
2.0
1.9
1.8
1.7
1.6
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
BIAS CURRENT (nA)
20
AMS2951 Feedback Bias Current
50
FEEDBACK CURRENT (µA)
0
-50
AMS2951 Feedback Pin Current
PIN 7 DRVEN BY EXTERNAL
SOURCE (REGULATOR RUN
OPEN LOOP)
10
0
-10
T
A
= 125°C
-100
-150
T
A
= 25°C
-20
-30
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (° C)
-200
T
A
= -55°C
-250
-2.0
0
0.5
-1.5 -1.0 -0.5
FEEDBACK VOLTAGE (V)
1.0
AMS2951 Error Comparator Output
9
8
ERROR OUTPUT (V)
7
6
5
4
3
2
1
0
0
1
2 3 4 5 6 7
INPUT VOLTAGE (V)
8
50k
RESISTOR
TO V
OUT
HYSTERESIS
50k RESISTOR TO
EXTERNAL 5V SUPPLY
V
OUT
= 5V
AMS2951 Comparator Sink Current
2.5
2.0
1.5
T
A
= 25°C
T
A
= 125°C
INPUT OUTPUT VOLTAGE
VOLTAGE
CHANGE
SINK CURRENT (mA)
100
mV
50
mV
0
-50
mV
8V
6V
4V
Line Transient Response
C
L
= 1µF
I
L
= 1mA
1.0
T
A
= -55°C
~
~
V
OUT
= 5V
0.5
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
OUTPUT LOW VOLTAGE (V)
0
200
400
TIME (µs)
600
800
6
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS [ Advanced Monolithic Systems Ltd ]
