CAT661 Datasheet, PDF (4/16 Pages) Catalyst Semiconductor – High Frequency 100mA CMOS Charge Pump, Inverter/Doubler

CAT661
Figure 1. Test Circuit Voltage Inverter
V+
+ _C1
100µF
1
BOOST/FC
8
V+
2
7
CAP+
OSC
3
CAT661
GND
LV
6
4 _CAP-
OUT ⁵
IS _V+
5V
External
Oscillator
COSC
RL
C2
+ ^100µF
IL
VOUT
TYPICAL OPERATING CHARACTERISTICS
Typical characteristic curves are generated using the circuit in Figure 1. Inverter test conditions are: V+ 5V, LV = GND,
BOOST/FC = Open and TA = 25˚C unless otherwise indicated. Note that the charge-pump frequency is one-half the
oscillator frequency.
Supply Current vs. Input Voltage
1400
1200
1000
800
FC = V+
600
400
FC = open
200
0
1
2
3
4
5
6
INPUT VOLTAGE [V]
Output Resistance vs. Input Voltage
10
8
Supply Current vs. Temperature (No Load)
250
VIN = 5V
200
150
VIN = 3V
100
50
0
-50 -25
VIN = 2V
0 25 50 75 100 125
TEMPERATURE [^oC]
Output Resistance vs. Temperature (50Ω load)
8
7
6
4
2
0
1
2
3
4
5
6
INPUT VOLTAGE [V]
6
5
VIN = 2V
4
VIN = 3V
3
2
-50
VIN = 5V
-25 0 25 50 75 100 125
TEMPERATURE [^oC]
Doc. No. 5003, Rev. J
4