LTC660 Linear Technology, LTC660 Datasheet - Page 3

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

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