TC1044S Datasheet, PDF (7/8 Pages) TelCom Semiconductor, Inc – CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
C1 ⁺
10µF
VOUT = –V–
1
8
2
7
3 TC1044S 6
1 MΩ
+
10µF
4
5
V– INPUT
Figure 10. Positive Voltage Conversion
TYPICAL CHARACTERISTICS
Unloaded Osc Freq vs. Temperature
12
10
8
6
V_IN = 5V
4
V_IN = 12V
2
0-40 _-20
0 20 40 60
TEMPERATURE (°C)
80 100
Supply Current vs. Temperature
(with Boost Pin = V_IN)
1000
800
600
V_IN = 12V
400
200
V_IN = 5V
0
-40 -20 0 20 40 60
TEMPERATURE (°C)
80 100
TELCOM SEMICONDUCTOR, INC.
1
TC1044S
V+
+
RL1
50 µF
1
8
VVO+U–TV=–
2
+
50
µF
RL2
2
7
1 MΩ
3 TC1044S 6
100
kΩ
100
kΩ
4
5
50 ⁺
µF
V–
Figure 11. Splitting a Supply in Half
2
3
Unloaded Osc Freq vs. Temperature
4
with Boost Pin = V_IN
60
50
40
V_IN = 5V
30
V_IN = 12V
5
20
10
0-40 _-20
0 20 40 60
TEMPERATURE (°C)
80 100
6
Voltage Conversion
101.0
100.5
100.0
99.5
99.0
Without Load
7
10K Load
98.5
T_A = 25°C
98.01 _{2 3 4 5 6 7 8 9 10 11 12}
8
INPUT VOLTAGE V_IN (V)
4-49