Charge Pump DC-TO-DC Voltage Converter
TC1044S
TYPICAL CHARACTERISTICS
(Cont.)
Output Source Resistance vs. Supply Voltage
100
OUTPUT SOURCE RESISTANCE (Ω)
Output Source Resistance vs. Temperature
100
OUTPUT SOURCE RESISTANCE (Ω)
70
50
30
80
60
40
20
0
-40
V
IN
= 2.5V
V
IN
= 5.5V
I
OUT
= 20mA
T
A
= 25°C
10
1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12
SUPPLY VOLTAGE (V)
-20
0
20
40
60
80
100
TEMPERATURE (°C)
Output Voltage vs. Output Current
0
OUTPUT VOLTAGE VOUT (V)
Power Conversion Efficiency vs. Load
100
90
80
70
60
50
40
30
20
10
0
Boost Pin = Open
Boost Pin = V+
-2
-4
-6
-8
-10
-12
0
10
20
30
40
50
60
70
80
90 100
POWER EFFICIENCY (%)
OUTPUT CURRENT (mA)
Supply Current vs. Temperature
200
175
SUPPLY CURRENT I
DD
(µA)
150
125
100
75
50
25
0
-40
-20
0
20
40
60
80
100
V
IN
= 5.5V
V
IN
= 12.5V
TEMPERATURE (°C)
TC1044S-12 9/16/96
8
1.0
1.5
2.0
3.0
4.5
6.0
7.5
9.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
50.0
55.0
60.0
LOAD CURRENT (mA)
© 2001 Microchip Technology Inc.
DS21348A
MICROCHIP [ MICROCHIP TECHNOLOGY ]
