LTC660 데이터 시트보기 (PDF) - Linear Technology
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LTC660 Datasheet PDF : 12 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS (Using Test Circuit in Figure 1)
LTC660
Supply Current vs Supply Voltage
300
TA = 25°C
250
200
150
BOOST = V+
100
BOOST = OPEN
50
0
1.5 2 2.5 3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
LTC660 • G01
Output Resistance
vs Supply Voltage
18
16
TA = 25°C
BOOST = OPEN
14
12
10
8
6
4
2
0
01
2
3
4
5
6
SUPPLY VOLTAGE (V)
LTC690 • TPC04
Efficiency vs Load Current
100
TA = 25°C
95
BOOST = OPEN
V+ = 5.5V
90
85
V+ = 4.5V
80
V+ = 3.5V
75
70
V+ = 1.5V
65
V+ = 2.5V
60
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
LTC660 • TPC07
Supply Current
vs Oscillator Frequency
1000
TA = 25°C
V+ = 5V
100
10
1
0.01
0.1
1
10 100
OSCILLATOR FREQUENCY (kHz)
1000
LTC660 • G02
Output Resistance
vs Oscillator Frequency
100
90
VTA+
=
=
25°C
5V
80
BOOST = OPEN
70
60
C1 = C2 = 150µF
50
C1 = C2 = 1500µF
40
C1 = C2 = 22µF
30
20
10
0
0.1
1
10
100
OSCILLATOR FREQUENCY (kHz)
LTC660 • TPC03
Output Resistance vs Temperature
25
BOOST = OPEN
20
V+ = 1.5V
15
V+ = 3V
10
V+ = 5V
5
0
–60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
LTC660 • TPC05
Output Voltage and Efficiency
vs Load Current, V+ = 5V
–3.0
–3.4
LTC660
EFFICIENCY
100
TA = 25°C
BOOST = OPEN
96
92
88
–3.8
84
80
–4.2
76
LTC660
72
OUTPUT VOLTAGE
–4.6
68
64
–5.0
60
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
LTC660 • TPC06
Efficiency vs Load Current
100
95
TA =
BOOST
25°C
= V+
V+ = 5.5V
90
85
V+ = 4.5V
80
V+ = 3.5V
75
V+ = 2.5V
70
V+ = 1.5V
65
60
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
LTC660 • TPC08
Output Voltage Drop
vs Load Current
1.0
TA = 25°C
0.9 BOOST = OPEN
0.8
0.7
V+ = 1.5V
0.6
V+ = 2.5V
0.5
0.4
V+ = 3.5V
0.3
V+ = 4.5V
V+ = 5.5V
0.2
0.1
0
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
LTC660 • TPC09
3
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