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

Voltage Inverter
V⁺
+ C₁
100 mF
CAT661
CAT661
1
BOOST/FC
V+ ⁸
2
CAP+
7
OSC
3
GND
4
CAP−
6
LV
5
OUT
I_{S V+}
5V
External
Oscillator
C_OSC
C2
100 mF
+
Figure 3. Test Circuit Voltage Inverter
R_L
I_L
V_OUT
TYPICAL OPERATING CHARACTERISTICS
(Typical characteristic curves are generated using the test circuit in Figure 3. Inverter test conditions are: V+ = 5 V, 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.)
1400
1200
1000
800
FC = V+
600
400
200
FC = open
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 4. Supply Current vs. Input Voltage
10
250
200
VIN = 5 V
150
100
VIN = 3 V
VIN = 2 V
50
0
−50 −25
0
25 50 75 100 125
TEMPERATURE (°C)
Figure 5. Supply Current vs. Temperature
(No Load)
8
8
7
6
6
5
VIN = 2 V
VIN = 3 V
4
4
2
VIN = 5 V
3
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 6. Output Resistance vs. Input Voltage
2
−50 −25
0
25 50 75 100 125
TEMPERATURE (°C)
Figure 7. Output Resistance vs. Temperature
(50 W Load)
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