LT1301 Просмотр технического описания (PDF) - Linear Technology
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LT1301 Datasheet PDF : 12 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1301
5V Output Efficiency
90
88
VIN = 3.3V
86
84
VIN = 2.5V
82
80
78
76
74
72
70
1
10
100
LOAD CURRENT (mA)
1000
LT1301 G1
Saturation Voltage vs Switch Current
250
225 TA = 25°C
200
175
150
125
100
75
50
25
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
SWITCH CURRENT (A)
LT1301 G4
Load Transient Response of
Figure 1 Circuit
Total Quiescent Current
in Shutdown
80
TA = 25°C
70
60
50
40
30
20
10
0
0 1 2 34 5 6 78
INPUT VOLTAGE (V)
LT1301 G2
Shutdown Pin Bias Current
20
18 TA = 25°C
16
14
12
10
8
6
4
2
0
01 2 34 56
SHUTDOWN VOLTAGE (V)
78
LT1300 G3
No-Load Input Current
500
Load Transient Response of
Figure 1 Circuit
450
400
350
VOUT = 12V
300
250
200
VOUT = 5V
150
VOUT
100mV/DIV
AC COUPLED
ILOAD
120mA
0mA
VIN = 5V
200µs/DIV
LT1301 G6
100
2
3
4
5
6
7
INPUT VOLTAGE (V)
LT1301 G5
Select Pin Transient Response
Select Pin Transient Response
VOUT
100mV/DIV
AC COUPLED
ILOAD120mA
0mA
VIN = 3.3V
200µs/DIV
LT1301 G7
12V
VOUT
2V/DIV
5V
VSELECT
10V/DIV
5ms/DIV
COUT = 100µF, VIN = 5V
100Ω LOAD
LT1301 G8
12V
VOUT
2V/DIV
5V
VSELECT
10V/DIV
5ms/DIV
COUT = 100µF, VIN = 3.3V
100Ω LOAD
LT1301 G9
3
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