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參數(shù)資料
| 型號(hào)： | LT1521 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護(hù) |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 248K |
| 代理商： | LT1521 |
7
LT1521/LT1521-3
LT1521-3.3/LT1521-5
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Current Limit
TEMPERATURE (
°
C)
–50
S
0.6
0.5
0.4
0.3
0.2
0.1
0
25
75
LT1521 TPC28
–25
0
50
100
125
V
IN
= 7V
V
OUT
= 0V
Current Limit
Adjust Pin Bias Current
TEMPERATURE (
°
C)
–50
A
25
LT1521 TPC25
–25
0
50
200
175
150
125
100
75
50
25
0
75
100
125
Reverse Output Current
OUTPUT VOLTAGE (V)
0
R
μ
A
50
45
40
35
30
25
20
15
10
5
0
8
LT1521 TPC26
3
5
7
9
4
6
10
T
J
= 25
°
C
V
= 0V
CURRENT FLOWS
INTO OUTPUT PIN
V
= V
(LT1521-3/LT1521-3.3
LT1521-5)
V
OUT
= V
ADJ
(LT1521)
LT1521
LT1521-3.3
LT1521-3
LT1521-5
2
1
TEMPERATURE (
°
C)
–50
O
μ
A
25
LT1521 TPC29
–25
0
50
8
7
6
5
4
3
2
1
0
75
100
125
V
IN
= 0V
V
OUT
= 3V (LT1521-3)
V
OUT
= 3.3V (LT1521-3.3)
V
OUT
= 5V (LT1521-5)
V
OUT
= 3.75V (LT1521)
Reverse Output Current
Ripple Rejection
TEMPERATURE (
°
C)
–50
66
64
62
60
58
56
54
52
25
75
LT
1521 TPC30
–25
0
50
100
125
R
V
= V
(NOMINAL) + 1V + 0.5V
P-P
RIPPLE AT f = 120Hz
I
LOAD
= 150mA
INPUT VOLTAGE (V)
0
S
0.6
0.5
0.4
0.3
0.2
0.1
0
3
5
LT1521 TPC27
1
2
4
6
7
V
OUT
= 0V
Shutdown Pin Threshold
(Off-to-On)
TEMPERATURE (
°
C)
–50
S
μ
A
3.0
2.5
2.0
1.5
1.0
0.5
0
25
75
LT1521 TPC23
–25
0
50
100
125
V
SHDN
= 0V
TEMPERATURE (
°
C)
–50
S
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
LT1521 TPC22
–25
25
100
125
I
LOAD
= 1mA
I
LOAD
= 300mA
Shutdown Pin Current
Shutdown Pin Input Current
SHUTDOWN PIN VOLTAGE (V)
0
S
25
20
15
10
5
0
2
4
5
9
LT1521 TPC24
1
3
6
7
8
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