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參數(shù)資料
| 型號(hào)： | LT1432CS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5V High Efficiency Step-Down Switching Regulator Controller |
| 中文描述： | SWITCHING CONTROLLER, PDSO8 |
| 封裝： | PLASTIC, SO-8 |
| 文件頁(yè)數(shù)： | 4/28頁(yè) |
| 文件大?。?/td> | 611K |
| 代理商： | LT1432CS8 |
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4
LT1432
Shutdown Current vs Input
Voltage
Battery Current in Shutdown*
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Minimum Input Voltage – Normal
Mode (1270/1271)
Efficiency vs Input Voltage
Efficiency vs Load Current
Minimum Input Voltage – Normal
Mode (1170 Family)
Burst Mode Minimum Input
Voltage
Minimum Input Voltage – Normal
Mode (1070 Family)
OUTPUT CURRENT (A)
0
I
6.5
7.0
7.5
4
LT1432 G04
6.0
5.5
5.0
1
2
3
5
LT1070 FAMILY(40kHz)
T
J
= 25°C
LT1070
LT1071
LT1072
OUTPUT CURRENT (A)
0
I
6.5
7.0
7.5
4
LT1432 G05
6.0
5.5
5.0
1
2
3
5
LT1170 FAMILY(100kHz)
T
J
= 25°C
LT1170
LT1171
LT1172
LOAD CURRENT (mA)
0
I
6.0
6.5
40
LT1432 G06
5.5
5.0
10
20
30
50
7.0
LT1170
LT1070
T
J
= 25°C
INPUT VOLTAGE (V)
0
0
C
μ
A
10
20
30
40
50
5
10
15
20
LT1432 G07
25
30
T
J
= 25°C
TEMPERATURE (°C)
0
C
μ
A
20
30
100
LT1432 G08
10
0
25
50
75
40
V
IN
= 6V
V
IN
= 30V
*DOES NOT INCLUDE LT1271 SWITCH LEAKAGE.
Current Limit Sense Voltage*
JUNCTION TEMPERATURE (°C)
0
S
60
70
100
LT1432 G11
50
40
25
50
75
80
* TEMPERATURE COEFFICIENT OF SENSE VOLTAGE IS
DESIGNED TO TRACK COPPER RESISTANCE.
INPUT VOLTAGE (V)
0
60
E
70
80
90
100
5
10
15
20
LT1432 G01
25
30
I
LOAD
= 0.5A
I
LOAD
= 2A
I
LOAD
= 1A
T
= 25°C
LT1271, L = 50
μ
H
OUTPUT CURRENT (A)
0
I
6.5
7.0
7.5
4
LT1432 G03
6.0
5.5
5.0
1
2
3
5
LT1270
LT1271
LT1270/1271
T
J
= 25°C
0
60
E
70
80
90
100
0.5
1.0
LOAD CURRENT (A)
1.5
2.0
LT1432 G02
2.5
3.0
LT1270
L = 50
μ
H
LT1170
L = 25
μ
H
T
J
= 25°C
LT1271
L = 50
μ
H
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