LT1521 Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
Список матч
LT1521 Datasheet PDF : 16 Pages
| |||
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown Pin Threshold
(Off-to-On)
2.0
1.8
1.6
ILOAD = 300mA
1.4
1.2
1.0
ILOAD = 1mA
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1521 • TPC22
Adjust Pin Bias Current
200
175
150
125
100
75
50
25
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1521 • TPC25
Shutdown Pin Current
3.0
VSHDN = 0V
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1521 • TPC23
Reverse Output Current
50
TJ = 25°C
45 VIN = 0V
40
CURRENT FLOWS
INTO OUTPUT PIN
35 VOUT = VSENSE
(LT1521-3/LT1521-3.3
30 LT1521-5)
25 VOUT = VADJ (LT1521)
LT1521
20
LT1521-3.3
15
LT1521-3
10
5
LT1521-5
0
0 1 2 3 4 5 6 7 8 9 10
OUTPUT VOLTAGE (V)
LT1521 • TPC26
Current Limit
0.6
VIN = 7V
0.5 VOUT = 0V
0.4
0.3
0.2
0.1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1521 • TPC28
Reverse Output Current
8
7
VIN = 0V
VOUT = 3V (LT1521-3)
6
VOUT = 3.3V (LT1521-3.3)
VOUT = 5V (LT1521-5)
5 VOUT = 3.75V (LT1521)
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1521 • TPC29
LT1521/LT1521-3
LT1521-3.3/LT1521-5
Shutdown Pin Input Current
25
20
15
10
5
0
01 2 3 4 5 6 7 8 9
SHUTDOWN PIN VOLTAGE (V)
LT1521 • TPC24
Current Limit
0.6
VOUT = 0V
0.5
0.4
0.3
0.2
0.1
0
01
2 34 5
INPUT VOLTAGE (V)
67
LT1521 • TPC27
Ripple Rejection
66
VIN = VOUT (NOMINAL) + 1V + 0.5VP-P
64 RIPPLE AT f = 120Hz
ILOAD = 150mA
62
60
58
56
54
52
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1521 • TPC30
7
Share Link: 