tc7660s Microchip Technology Inc., tc7660s Datasheet - Page 7

• Manufacturer Part Number: tc7660s
• Description: Super Charge Pump Dc-to-dc Voltage Converter
• Manufacturer: Microchip Technology Inc.

SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TYPICAL CHARACTERISTICS
© 2001 Microchip Technology Inc.
10 F
1000
800
600
400
200
C 1
12
10
0
8
6
4
2
0
-40
-40
+
Unloaded Osc Freq vs. Temperature
Supply Current vs. Temperature
-20
-20
Figure 10. Positive Voltage Multiplier
1
2
3
4
(with Boost Pin = V
TC7660S
TEMPERATURE ( C)
TEMPERATURE ( C)
0
0
DS21467A
20
20
8
7
6
5
V OUT = –V –
40
40
1 M
V – INPUT
60
60
IN
V
V
)
IN
V
V
IN
IN
IN
= 12V
= 5V
80
80
= 5V
= 12V
+
10 F
100
100
7
101.0
100.5
100.0
99.5
99.0
98.5
98.0
R
R
V
L2
L1
V
60
50
40
30
20
10
OUT
+
0
–V
2
Unloaded Osc Freq vs. Temperature
-40
1
=
–
50 F
2
Figure 11. Splitting a Supply in Half
-20
+
–
3
with Boost Pin = V
50 F
50 F
INPUT VOLTAGE V
Voltage Conversion
TEMPERATURE ( C)
4
0
100 k
+
–
+
5
20
6
1
2
3
4
7
TC7660S
40
IN
(V)
V
8
IN
IN
= 12V
60
Without Load
9
10K Load
V
TC7660S
8
7
6
5
IN
T
10
TC7660S-14 9/16/96
A
= 5V
80
1 M
= 25 C
11
100
12
V
V
+
–