LT1962 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Lista de partido
LT1962 Datasheet PDF : 16 Pages
| |||
TYPICAL PERFOR A CE CHARACTERISTICS
LT1962 Series
Input Ripple Rejection
80
IL = 300mA
70
VIN = VOUT(NOMINAL) + 1V
+ 50mVRMS RIPPLE
60
CBYP = 0
50
COUT = 10µF
40
30
COUT = 3.3µF
20
10
0
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
1962 G43
LT1962 Minimum Input Voltage
2.50
VOUT = 1.22V
2.25
2.00
IL = 300mA
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)
1962 G46
Output Noise Spectral Density
10
IL = 300mA
COUT = 10µF
LT1962-5
1
LT1962
CBYP = 1000pF
CBYP = 100pF
0.1 CBYP = 0.01µF
0.01
10
100
1k
10k
FREQUENCY (Hz)
100k
1962 G49
Input Ripple Rejection
80
CBYP = 0.01µF
70
CBYP = 1000pF
60
50
CBYP = 100pF
40
30
20 IL = 300mA
VIN = VOUT(NOMINAL) + 1V
10 + 50mVRMS RIPPLE
COUT = 10µF
0
10
100
1k
10k
FREQUENCY (Hz)
100k 1M
1962 G44
Load Regulation
5
0 LT1962
LT1962-1.8
LT1962-1.5
–5
LT1962-3.3
–10
LT1962-3
LT1962-2.5
LT1962-5
–15
–20
VIN = VOUT(NOMINAL) + 1V
∆IL = 1mA TO 300mA
–25
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
1962 G47
RMS Output Noise
vs Bypass Capacitor
160
IL = 300mA
140 COUT = 10µF
f = 10Hz to 100kHz
120
LT1962-5
100
LT1962-3
LT1962-3.3
80
LT1962-2.5
60
LT1962-1.8
LT1962-1.5
40 LT1962
20
0
10
100
1k
10k
CBYP (pF)
1962 G50
Ripple Rejection
68
66
64
62
60
58
56
IL = 300mA
54 VIN = VOUT(NOMINAL) + 1V
+ 0.5VP-P RIPPLE AT f = 120Hz
52
– 50 – 25 0 25 50 75
TEMPERATURE (°C)
100 125
1962 G45
Output Noise Spectral Density
10
IL = 300mA
COUT = 10µF
CBYP = 0
LT1962-5 LT1962-3.3
LT1962-3
1
LT1962
LT1962-2.5
0.1
LT1962-1.8
LT1962-1.5
0.01
10
100
1k
10k
FREQUENCY (Hz)
100k
1962 G48
RMS Output Noise
vs Load Current (10Hz to 100kHz)
160
COUT = 10µF
140
CBYP = 0µF
CBYP = 0.01µF
120
LT1962-5
100
80
60
40
20
0
0.01
LT1962
LT1962-5
LT1962
0.1
1
10 100
LOAD CURRENT (mA)
1000
1962 G51
9
Share Link: 