LT3022 Просмотр технического описания (PDF) - Linear Technology
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LT3022 Datasheet PDF : 20 Pages
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LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
TYPICAL PERFORMANCE CHARACTERISTICS
GND Pin Current vs ILOAD
24
VIN = 1.6V
21 VOUT = 1.2V
VSHDN = 10V
18 TJ = 25°C
15
12
9
6
3
0
0 100 200 300 400 500 600 700 800 900 1000
LOAD CURRENT (mA)
3022 G14
SHDN Pin Input Current
6
VIN = 10V
VSHDN = 10V
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3022 G17
Reverse Input Leakage Current
0
–2
–4
–6
–8
–10
–12
–14
–16 VIN = –10V
–18 VOUT = 0V
VSHDN = 10V
–20
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
3022 G20
SHDN Pin Threshold
1.0
0.9 IL = 1mA
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3022 G15
Current Limit
3.0
2.7 VOUT = 0V
2.4
VIN = 10V
2.1
1.8
VIN = 1.7V
1.5
1.2
0.9
0.6
0.3
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3022 G18
Reverse Output Current
120
VIN = 0V
VOUT = 1.2V
100 IOUT FLOWS INTO OUT PIN
IIN FLOWS OUT OF IN PIN
80
60
40
20
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
IOUT
IIN
100 125
3022 G21
SHDN Pin Input Current
5.0
TJ = 25°C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
012345678
SHDN PIN VOLTAGE (V)
9 10
3022 G16
Reverse Input Leakage Current
0
–2
–4
–6
–8
–10
–12
–14
–16 VOUT = 0V
–18 VSHDN = 10V
TJ = 25°C
–20
0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10
INPUT VOLTAGE (V)
3022 G19
Input Ripple Rejection
100
90
VIN = 1.5V + 50mVRMS RIPPLE
VOUT = 0.5V
80
IL = 1A
TJ = 25°C
70
60
COUT = 47µF
50
40
30
COUT = 10µF
20
10
0
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
3022 G22
3022fb
8
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