LTC1044A Просмотр технического описания (PDF) - Linear Technology
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LTC1044A Datasheet PDF : 14 Pages
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LTC1044A
Typical Performance Characteristics
Operating Voltage Range vs
Temperature
14
12
10
8
6
4
2
0
–55 –25 0 25 50 75 100 125
AMBIENT TEMPERATURE (°C)
1044a G01
Power Efficiency vs Oscillator
Frequency, V+ = 5V
100
98
100µF
96
10µF
94
1µF
92
TA = 25°C
C1 = C2
IL = 1mA
90
88
100µF
86
84
82
10µF
IL = 15mA
1µF
80
100
1k
10k
100k
OSCILLATOR FREQUENCY (Hz)
1044a G02
Power Efficiency vs Oscillator
Frequency, V+ = 10V
100
98
96
100µF IL = 1mA
TA = 25°C
C1 = C2
94 10µF
92
10µF
100µF
IL = 15mA
90
88
86
84
82
1µF
1µF
80
100
1k
10k
100k
OSCILLATOR FREQUENCY (Hz)
1044a G03
Output Resistance vs Oscillator
Frequency, V+ = 5V
500
C1 = C2 = 10µF
400
TA = 25°C
IL = 10mA
C1 = C2 = 1µF
300
200
100
C1 = C2 = 100µF
0
100
1k
10k
100k
OSCILLATOR FREQUENCY (Hz)
1044a G04
Output Resistance vs Oscillator
Frequency, V+ = 10V
500
TA = 25°C
IL = 10mA
400
300
200
C1 = C2
= 100µF
100
C1 = C2
= 10µF
C1 = C2 = 1µF
0
100
1k
10k
100k
OSCILLATOR FREQUENCY (Hz)
1044a G05
Power Conversion Efficiency vs
Load Current, V+ = 2V
100
90
PEFF
80
10
TA = 25°C
C1 = C2 = 10µF
9
fOSC = 1kHz
8
70
7
60
6
IS
50
5
40
4
30
3
20
2
10
1
0
0
0 1 2 34 5 6 7
LOAD CURRENT (mA)
1044a G06
Power Conversion Efficiency vs
Load Current, V+ = 5V
100
100
90
PEFF
TA = 25°C
C1 = C2 = 10µF
90
80
fOSC = 5kHz
80
70
70
60
60
IS
50
50
40
40
30
30
20
20
10
10
0
0
0 10 20 30 40 50 60 70
LOAD CURRENT (mA)
1044a G07
Power Conversion Efficiency vs
Load Current, V+ = 10V
100
300
90
270
PEFF
80
240
70
210
IS
60
180
50
150
40
120
30
90
20
TA = 25°C
60
10
C1 = C2 = 10µF 30
fOSC = 20kHz
0
0
0 20 40 60 80 100 120 140
LOAD CURRENT (mA)
1044a G08
1044afa
4
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