MAX1680 Maxim, MAX1680 Datasheet - Page 4

• Manufacturer Part Number: MAX1680
• Description: 125mA / Frequency-Selectable / Switched-Capacitor Voltage Converters
• Manufacturer: Maxim

125mA, Frequency-Selectable,
Switched-Capacitor Voltage Converters
(All curves generated using the inverter configuration shown in the Typical Operating Circuit s with LV = GND, FSEL = IN or LV,
C1 = C2 = 10µF (MAX1680), C1 = C2 = 2.2µF (MAX1681), and T
the doubler configuration with LV = OUT and T
4
__________________________________________Typical Operating Characteristics
800
700
600
500
400
300
200
100
8.5
7.5
6.5
5.5
4.5
3.5
2.5
_______________________________________________________________________________________
0
2.0
0
OUTPUT SOURCE RESISTANCE
2.5
20
OUTPUT VOLTAGE DROP
vs. SUPPLY VOLTAGE
vs. LOAD CURRENT
40
3.0
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
3.5
60
80
4.0
V
INPUT
100
4.5
= 3V
V
INPUT
120
5.0
= 5V
140
5.5
A
= +25°C.)
-10
-12
-14
-2
-4
-6
-8
2
0
6
5
4
3
2
1
0
-40
2.0
MAX1680
OSCILLATOR FREQUENCY CHANGE
OUTPUT SOURCE RESISTANCE vs.
-20
2.5
vs. SUPPLY VOLTAGE
3.0
0
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE
MAX1681
A
= +25°C, unless otherwise noted. Test results are also valid for
3.5
20
V
INPUT
4.0
40
= 3V
V
INPUT
4.5
60
= 5V
5.0
80
100
5.5
100
-10
10
80
60
40
20
-2
-4
-6
-8
8
6
4
2
0
0
LOAD CURRENT (INVERTER CONFIGURATION)
-40
1
OSCILLATOR FREQUENCY CHANGE
-20
MAX1680
MAX1680 EFFICIENCY vs.
MAX1681
V
INPUT
vs. TEMPERATURE
0
LOAD CURRENT (mA)
TEMPERATURE (°C)
10
V
= 5.5V
INPUT
20
V
INPUT
= 4V
40
= 3V
100
60
FSEL = IN
80
1000
100