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參數(shù)資料
| 型號： | AMS2954CT-25 |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 250mA LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 250mA的低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 6/15頁 |
| 文件大?。?/td> | 169K |
| 代理商： | AMS2954CT-25 |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS2954
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
-75
0
25 50 75 100 125
TEMPERATURE (° C)
450
300
150
S
Short Circuit Current
350
200
150
-50 -25
-75
0
25 50 75 100125
TEMPERATURE (° C)
600
150
D
Dropout Voltage
400
100
0
-50 -25
I
L
= 250mA
100
250
400
-75
0
25 50 75 100125
TEMPERATURE (° C)
2.2
150
M
AMS2954 Minimum Operating Voltage
-50 -25
-75
0
25 50 75 100125
TEMPERATURE (° C)
20
150
B
AMS2954 Feedback Bias Current
0
-30
-50 -25
-2.0
-1.5 -1.0
FEEDBACK VOLTAGE (V)
-0.5
0
0.5
-250
50
-50
-150
AMS2954 Feedback Pin Current
1.0
F
μ
A
-200
0
-100
200
400
600
100
mV
50
mV
800
I
V
Line Transient Response
TIME (
μ
s)
0
8V
4V
0
I
L
= 1mA
V
OUT
= 5V
0.0
0.3 0.4 0.5 0.6 0.7 0.8
OUTPUT LOW VOLTAGE (V)
2.5
0.9
S
AMS2954 Comparator Sink Current
1.5
0.0
0.1 0.2
0
3
4
5
6
7
8
9
4
E
AMS2954 Error Comparator Output
INPUT VOLTAGE (V)
5
2
1
1
2
0
3
6
V
OUT
= 5V
100
μ
A
10mA
OUTPUT CURRENT
100mA
250mA
D
0
500
Dropout Voltage
500
300
50
400
300
200
100
2.1
2.0
1.9
1.8
1.7
1.6
10
-10
-20
-50
mV
6V
O
C
~
~
8
7
2.0
1.0
0.5
I
L
= 100
μ
A
T
J
= 25°C
T
A
= 125°C
T
=
25°C
T
A
= -55°C
PIN 7 DRVEN BY EXTERNAL
SOURCE (REGULATOR RUN
OPEN LOOP)
T
=
125°C
T
=
25°C
T
A
= -55°C
C
L
= 1
μ
F
HYSTERESIS
50k RESISTOR TO
EXTERNAL 5V SUPPLY
50k
RESISTOR
TO V
OUT
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