CAT661
Figure 1. Test Circuit Voltage Inverter
IS
V+
1
2
+
C1
100µF
BOOST/FC
CAP+
GND
CAP-
V+
OSC
LV
OUT
8
7
6
5
V+
5V
External
Oscillator
COSC
RL
IL
VOUT
C2
+ 100µF
3
4
CAT661
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 T
A
= 25˚C unless otherwise indicated. Note that the charge-pump frequency is one-half the
oscillator frequency.
Supply Current vs. Input Voltage
1400
1200
Supply Current vs. Temperature (No Load)
250
INPUT CURRENT [µA]
INPUT CURRENT [µA]
1000
800
600
400
200
0
1
2
3
4
5
INPUT VOLTAGE [V]
6
FC = open
FC = V+
200
150
100
50
VIN = 5V
VIN = 3V
VIN = 2V
0
-50
-25
0
25
50
75
100
125
TEMPERATURE
[
o
C]
Output Resistance vs. Input Voltage
10
Output Resistance vs. Temperature (50
Ω
load)
8
OUTPUT RESISTANCE [Ω]
OUTPUT RESISTANCE [Ω]
8
6
4
2
0
1
2
3
4
5
INPUT VOLTAGE [V]
6
7
6
5
VIN = 2V
4
3
VIN = 5V
2
-50
-25
0
25 50 75 100 125
TEMPERATURE [
o
C]
VIN = 3V
Doc. No. MD-5003, Rev. K
4
CATALYST [ CATALYST SEMICONDUCTOR ]
