LT3028 データシートの表示（PDF） - Linear Technology
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LT3028
Linear Technology
LT3028 Datasheet PDF : 16 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LT3028
Output 2
Input Ripple Rejection
80
70
60
50
COUT = 10µF
40
30
COUT = 1µF
20 IL = 100mA
10
VIN2 = 2.3V + 50mVRMS RIPPLE
CBYP = 0
0 TJ = 25°C
0.01 0.1
1
10
FREQUENCY (kHz)
100 1000
3028 G26
Output 1
Input Ripple Rejection
80
70
60
50
COUT = 10µF
40
30
20
IL = 500mA
VIN1 = VOUT1(NOMINAL) +
10
1V + 50mVRMS RIPPLE
CBYP = 0
0 TJ = 25°C
10
100
1k
COUT = 4.7µF
10k 100k 1M
FREQUENCY (Hz)
3028 G29
Output 2
Input Ripple Rejection
80
70
CBYP = 0.01µF
60
CBYP = 1000pF
50
CBYP = 100pF
40
30
20 IL = 100mA
10
VIN2 = 2.3V + 50mVRMS RIPPLE
COUT = 10µF
0 TJ = 25°C
0.01 0.1
1
10
FREQUENCY (kHz)
100 1000
3028 G27
Output 1
Input Ripple Rejection
80
70 CBYP = 0.01µF
60
50 CBYP = 1000pF
CBYP = 100pF
40
30
20
IL = 500mA
VIN1 = VOUT1(NOMINAL) +
10
1V + 50mVRMS RIPPLE
COUT = 10µF
TJ = 25°C
0
10
100
1k
10k
FREQUENCY (Hz)
100k 1M
3028 G30
Output 2
Input Ripple Rejection
80
70
60
50
40
30
20 VIN2 = VOUT2(NOMINAL) +
1V + 0.5VP-P RIPPLE
10 AT f = 120Hz
IL = 50mA
0
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
3028 G28
Output 1 Ripple Rejection
68
66
64
62
60
58
56 VIN1 = VOUT1(NOMINAL) +
54
1V + 0.5VP-P RIPPLE
AT f = 120Hz
IL = 500mA
52
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
3028 G31
Output 2 Minimum Input Voltage
2.5
VOUT2 = 1.22V
2.0
IL = 100mA
1.5
IL = 50mA
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3028 G32
Output 1 Minimum Input Voltage
2.50 VOUT1 = 1.22V
2.25
2.00
IL = 500mA
1.75
1.50
IL = 1mA
1.25
1.00
0.75
0.50
0.25
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3028 G33
3028f
7
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