TC1044S-12 9/16/96
TC1044S
Charge Pump DC-TO-DC Voltage Converter
8
© 2001 Microchip Technology Inc. DS21348A
TYPICAL CHARACTERISTICS (Cont.)
Output Voltage vs. Output Current
0
-2
-4
-6
-8
-10
-12
OUTPUT VOLTAGE V
OUT
(V)
OUTPUT CURRENT (mA)
0 1009080706040 503010 20
1.5 1211.510.59.58.57.55.5 6.54.52.5 3.5
Output Source Resistance vs. Supply Voltage
100
10
30
50
70
OUTPUT SOURCE RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
Output Source Resistance vs. Temperature
100
0
20
40
60
80
-40 -20 0 20 40 10060 80
OUTPUT SOURCE RESISTANCE (Ω)
TEMPERATURE (°C)
V
IN
= 2.5V
V
IN
= 5.5V
Power Conversion Efficiency vs. Load
POWER EFFICIENCY (%)
LOAD CURRENT (mA)
Boost Pin = Open
Boost Pin = V
+
0
10
20
30
40
50
60
70
80
90
100
60.0
55.0
50.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
9.0
7.5
6.0
4.5
3.0
2.0
1.5
1.0
I
OUT
= 20mA
T
A
= 25°C
Supply Current vs. Temperature
200
150
125
175
100
75
50
25
0
SUPPLY CURRENT I
DD
(µA)
TEMPERATURE (°C)
-40 -20 0 20 40 10060 80
V
IN
= 12.5V
V
IN
= 5.5V
