LTC660 查看數據表（PDF） - Linear Technology
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LTC660 Datasheet PDF : 12 Pages
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LTC660
TYPICAL PERFORMANCE CHARACTERISTICS (Using Test Circuit in Figure 1)
Output Voltage Drop
vs Load Current
1.0
0.9 BTAOO=S2T5°=CV+
0.8
0.7
0.6
V+ = 2.5V
0.5
V+ = 1.5V
0.4
0.3
0.2
V+ = 5.5V
V+ = 3.5V
V+ = 4.5V
0.1
0
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (mA)
LTC660 • TPC10
Output Voltage
vs Oscillator Frequency
– 5.0
IL = 1mA
– 4.5
IL = 10mA
– 4.0
IL = 80mA
–3.5
–3.0
–2.5
0.1
TA =25°C
V+ = 5V
BOOST = OPEN
1
10
100
OSCILLATOR FREQUENCY (kHz)
LTC660 • TPC11
Efficiency vs Oscillator Frequency
100
95
90
85
IL = 10mA IL = 80mA
80
75
IL = 1mA
70
65
60
55
VTA+
=
=
25°C
5V
BOOST = OPEN
50
0.1
1
10
100
OSCILLATOR FREQUENCY (kHz)
LTC660 • TPC12
Oscillator Frequency
vs Supply Voltage
12
TA = 25°C
BOOST = OPEN
10 OSC = OPEN
8
6
4
2
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
LTC660 • TPC13
Oscillator Frequency
vs Supply Voltage
100
90 BTAOO=S2T5°=CV+
80 OSC = OPEN
70
60
50
40
30
20
10
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
LTC660 • TPC14
Oscillator Frequency
vs Temperature
12
10
8
6
4
2 V+ = 5V
BOOST = OPEN
OSC = OPEN
0
–60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
LTC660 • TPC15
Oscillator Frequency
vs Temperature
100
90
80
70
60
50
40
30
20 V+ = 5V
10 BOOST = V+
OSC = OPEN
0
–60 –40 –20 0
20 40 60 80 100 120 140
TEMPERATURE (°C)
LTC660 • TPC16
Oscillator Frequency
vs External Capacitance
100
10
BOOST = V+
1
0.1
BOOST = OPEN
00.1
1
10
100
1000
CAPACITANCE (pF)
10000
LTC660 • TPC17
4
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