Charge Pump Voltage Converters
Typical Performance Curves
Output Resistance vs. Supply Voltage
TJ7660
10000
Output Resistance(Ohm)
1000
100
10
1
2
3
4
5
Supply Voltage(v)
+
6
7
8
Output Load vs. Load Current(V =+5)
130
Output Load(Ohm)
120
110
100
90
80
0
1
5
10
Load Current(mA)
15
20
25
Power Convension Efficiency vs.Load Current(V
+
=+5V)
100
90
80
70
60
50
40
30
20
10
0
5
10
15
Load Current(mA)
20
25
30
Power Convention Efficiency(%)
NOTE:
6. These curves include in the supply current that current fed directly into the load RL from the V+ (See Figure 11). Thus,
approximately half the supply current goes directly to the positive side of the load, and the other half, through the TJ7660,
to the negative side of the load. Ideally, V
OUT
= 2V
IN
, I
S
= 2I
L
, so V
IN
x I
S
= V
OUT
x I
L
.
-4-
HTC
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