Max660 cmos monolithic voltage converter, Typical operating characteristics (continued) – Rainbow Electronics MAX660 User Manual
Page 4
MAX660
CMOS Monolithic Voltage Converter
4
_______________________________________________________________________________________
14
0
1.5
2.5
4.5
OUTPUT SOURCE RESISTANCE
vs. SUPPLY VOLTAGE
8
12
SUPPLY VOLTAGE (V)
OUTPUT SOURCE RESISTANCE (
Ω
)
3.5
10
6
4
2
2.0
3.0
4.0
5.5
5.0
MAX660-13
76
0.1
10
100
EFFICIENCY
vs. OSCILLATOR FREQUENCY
96
OSCILLATOR FREQUENCY (kHz)
EFFICIENCY (%)
1
88
60
I
LOAD
= 80mA
100
92
84
80
72
68
64
MAX660-6
I
LOAD
= 10mA
I
LOAD
= 1mA
100
0
1.0
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
20
80
SUPPLY VOLTAGE (V)
OSCILLATOR FREQUENCY (kHz)
3.5
40
1.5
2.0
4.0
60
2.5
3.0
4.5
5.0 5.
FC = V+, OSC = OPEN
LV = GND
LV = OPEN
12
0
1.5
5.5
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
2
10
SUPPLY VOLTAGE (V)
OSCILLATOR FREQUENCY (kHz)
4.5
6
4
2.5
3.5
8
LV = GND
LV = OPEN
FC = OPEN, OSC = OPEN
MAX660-8
100
0.01
1
100
OSCILLATOR FREQUENCY
vs. EXTERNAL CAPACITANCE
0.1
MAX660-9
CAPACITANCE (pF)
OSCILLATOR FREQUENCY (kHz)
1
10
10
1000
FC = OPEN
FC = V+
10000
100
0
-60
140
OSCILLATOR FREQUENCY
vs. TEMPERATURE
20
80
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
0
60
40
-40 -20
100
20
40
60 80
120
FC = V+, OSC = OPEN, RL = 100
Ω
MAX660-10
12
0
-60
140
OSCILLATOR FREQUENCY
vs. TEMPERATURE
2
10
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
80
6
4
0
20
100
8
-40 -20
40 60
120
FC = OPEN, OSC = OPEN
R
L
= 100
Ω
MAX660-10A
30
0
-60
140
OUTPUT SOURCE RESISTANCE
vs. TEMPERATURE
5
25
TEMPERATURE (°C)
OUTPUT SOURCE RESISTANCE (
Ω
)
0
15
10
-40 -20
20
20
40 60
80 100 120
V+ = 5.0V
C1, C2 = 150
µF ALUMINUM
ELECTROLYTIC
CAPACITORS
R
L
= 100
Ω
V+ = 3.0V
MAX660
-11
V+ = 1.5V
_____________________________Typical Operating Characteristics (continued)
30
0
-60
140
OUTPUT SOURCE RESISTANCE
vs. TEMPERATURE
5
25
TEMPERATURE (°C)
OUTPUT SOURCE RESISTANCE (
Ω
)
0
15
10
-40 -20
20
20
40 60
80 100 120
C1, C2 = 150
µF OS-CON CAPACITORS
R
L
= 100
Ω
V+ = 5.0V
V+ = 1.5V
V+ = 3.0V
MAX660-12
100
0
1.0
OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
20
80
SUPPLY VOLTAGE (V)
OSCILLATOR FREQUENCY (kHz)
3.5
40
1.5
2.0
4.0
60
2.5
3.0
4.5
5.0 5.5
FC = V+, OSC = OPEN
LV = GND
LV = OPEN
MAX660-7