LTC660 Linear Technology, LTC660 Datasheet - Page 4

• Manufacturer Part Number: LTC660
• Description: 100mA CMOS Voltage Converter
• Manufacturer: Linear Technology

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