100mA CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC660
TYPICAL CHARACTERISTICS
All curves are generated using the test circuit of Figure 1 with V
+
= 5V, LV = GND, FC = open, and T
A
= +25°C, unless
otherwise noted.
1)
600
500
1
2
3
Supply Current vs.
Supply Voltage
2)
10,000
Supply Current vs.
Oscillator Frequency
3)
100
Efficiency vs.
Load Current
V+ = 5.5V
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
EFFICIENCY (%)
400
300
200
DOUBLER MODE
LV = OUT
1000
DOUBLER MODE
92
84
V+ = 3.5V
76
V+ = 4.5V
100
LV = OPEN
100
LV = GND
0
1.5 2.0
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.0 5.5
10
INVERTING MODE
68
V+ = 2.5V
V+ = 1.5V
0
20
40
60
80
LOAD CURRENT (mA)
100
1
0.01
0.1
1
10
OSCILLATOR FREQUENCY (kHz)
100
60
4
5
4)
2.0
Output Voltage Drop
vs. Load Current
5)
-5.0
Output Voltage vs.
Oscillator Frequency
6)
100
96
Efficiency vs.
Oscillator Frequency
ILOAD = 10mA
OUTPUT VOLTAGE DROP
FROM SUPPLY VOLTAGE (V)
V+ = 3.5V
1.2
V+ = 1.5V
V+ = 2.5V
V+ = 4.5V
OUTPUT VOLTAGE (V)
1.6
-4.5
ILOAD = 1mA
-4.0
POWER EFFICIENCY (%)
ILOAD = 10mA
92
88
84
80
76
72
68
64
ILOAD = 1mA
0.1 0.2 0.4
1 2 4
10 20 40
OSCILLATOR FREQUENCY (kHz)
100
ILOAD =
80mA
ILOAD = 80mA
0.8
-3.5
0.4
V+ = 5.5V
0
0
20
40
60
80
LOAD CURRENT (mA)
100
-3.0
0.1 0.2 0.4
1 2 4
10 20 40
OSCILLATOR FREQUENCY (kHz)
100
60
6
7
7)
15
Output Source Resistance
vs. Supply Voltage
8)
OUTPUT SOURCE RESISTANCE (Ω)
16
14
12
10
Output Source Resistance
vs. Temperature
V+ = 1.5VDC
9)
12
Oscillator Frequency
vs. Supply Voltage
LV GROUNDED
10
8
6
FC = OPEN, OSC = OPEN
4
2
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
LV OPEN
OUTPUT SOURCE RESISTANCE (Ω)
12
9
6
V+ = 3VDC
8
6
V+ = 5VDC
4
-40
-20
0
20
40
60
80
100
3
OSCILLATOR FREQUENCY (kHz)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
8
TELCOM SEMICONDUCTOR, INC.
4-7
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
