125mA, Frequency-Selectable,
Switched-Capacitor Voltage Converters
MAX1680/MAX1681
Table 5. Device Comparison
PART NUMBER
MAX660
MAX665
MAX860
MAX861
MAX1680
MAX1681
ICL7660
TYPICAL
QUIESCENT
CURRENT (mA)
0.12/1.0
0.20/1.0
0.20/0.60/1.40
0.30/1.10/2.50
2.5/5.0
10/20
0.080
OUTPUT
CURRENT
(mA)
100
100
50
50
125
125
10
OUTPUT
RESISTANCE
(Ω)
6.5
6.5
12
12
3.5
3.5
55
SWITCHING
FREQUENCY
(kHz)
5/40
5/40
6/50/130
13/100/250
125/250
500/1000
5
__________________Pin Configuration
___________________Chip Information
TRANSISTOR COUNT: 171
TOP VIEW
SUBSTRATE CONNECTED TO IN
FSEL
CAP+
GND
1
2
3
8
7
IN
SHDN
LV
OUT
MAX1680
MAX1681
6
5
CAP-
4
SO
10
______________________________________________________________________________________