LT1121-5(RevA) Просмотр технического описания (PDF) - Linear Technology
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LT1121-5 Datasheet PDF : 12 Pages
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LT1121/LT1121-3.3/LT1121-5
TYPICAL PERFOR A CE CHARACTERISTICS
Shutdown Pin Current
10
9 VSHDN = 0V
8
7
6
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G15
Reverse Output Current
30
VIN = 0V
25 VOUT = 5V (LT1121-5)
VOUT = 3.3V (LT1121-3.3)
VOUT = 3.8V (LT1121)
20
15
10
5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G13
Reverse Output Current
100
TJ = 25°C
90 VIN = 0V
80
CURRENT FLOWS
INTO OUTPUT PIN
70
60
LT1121
50
(VOUT = VADJ)
40
LT1121-3.3
30
20
LT1121-5
10
0
0 1 2 3 4 5 6 7 8 9 10
OUTPUT VOLTAGE (V)
1121 G01
Shutdown Pin Input Current
25
20
15
10
5
0
01 2 3 4 5 6 7 8 9
SHUTDOWN PIN VOLTAGE (V)
1121 G28
Current Limit
400
VOUT = 0V
350
300
250
200
150
100
50
0
0 1 2 34 5
INPUT VOLTAGE (V)
67
1121 G20
Ripple Rejection
64
VIN = VOUT (NOMINAL) + 1V
62
+ 0.5VP-P RIPPLE AT f = 120Hz
IOUT = 100mA
60
58
56
54
52
50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G18
LT1121
Adjust Pin Bias Current
400
350
300
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G25
Current Limit
400
VIN = 7V
350 VOUT = 0V
300
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G19
Ripple Rejection
100
90
IOUT = 100mA
VIN = 6V + 50mVRMS RIPPLE
80
70
COUT = 47µF
SOLID TANTALUM
60
50
40
30
COUT = 1µF
20
SOLID TANTALUM
10
0
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
1121 G26
6
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