LT121IZ-3.3(RevE) Просмотр технического описания (PDF) - Linear Technology
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LT121IZ-3.3 Datasheet PDF : 16 Pages
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LT1121/LT1121-3.3/LT1121-5
TYPICAL PERFOR A CE CHARACTERISTICS
Reverse Output Current
100
TJ = 25°C
90 VIN = 0V
CURRENT FLOWS
80 INTO OUTPUT PIN
70
60
LT1121
50
(VOUT = VADJ)
40
LT1121-3.3
30
20
LT1121-5
10
0
012345 678
OUTPUT VOLTAGE (V)
9 10
1121 G01
Load Regulation
0
ΔILOAD = 1mA TO 150mA
–5
–10
LT1121*
LT1121-3.3
–15
– 20
– 25
LT1121-5
– 30
–35 * ADJ PIN TIED TO
OUTPUT PIN
– 40
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
1121 G21
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
LT1121-5
Load Transient Response
VIN = 6V
0.2 CIN = 0.1μF
0.1 COUT = 1μF
0
– 0.1
– 0.2
150
100
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
TIME (ms)
1121 G30
Ripple Rejection
100
IOUT = 100mA
90 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
LT1121-5
Load Transient Response
VIN = 6V
0.2 CIN = 0.1μF
0.1 COUT = 3.3μF
0
– 0.1
– 0.2
150
100
50
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
TIME (ms)
1121 G31
1121fe
7
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