TCM828ECT713 Datasheet, PDF (6/9 Pages) Microchip Technology – Switched Capacitor Voltage Converters

TCM828
TCM829
Switched Capacitor
Voltage Converters
TYPICAL CHARACTERISTICS
Circuit of Figure 3, V_IN = +5V, C1 = C2 = C3, T_A = +25°C, unless otherwise noted.
Output Resistance
vs. Supply Voltage
70
60
50
40
30
TCM828
TCM829
20
10
Output Resistance
vs. Temperature
80
70
60
V_IN = 1.5V
50
40
30
V_IN = 3.3V
20
V_IN = 5.0V
10
TCM828
Output Current vs. Capacitance
40 _{VIN = 4.75V, VOUT = – 4.0V}
35
30
V_IN = 3.15V, V_OUT = – 2.5V
25
20
15
10
V_IN = 1.9V, V_OUT = –1.5V
5
0
1.5
2.5
3.5
4.5
SUPPLY VOLTAGE (V)
0
–40°C
0°C
25°C
TEMPERATURE (°C)
0
85°C
0
10
20
30
40
CAPACITANCE (µF)
TCM829
Output Current vs. Capacitance
40
V_IN = 4.75V, V^– = – 4.0V
35
30
25
V_IN = 3.15V, V^– = – 2.5V
20
15
10
V_IN = 1.9V, V_OUT = – 1.5V
5
0
0 5 10 15 20 25 30 35
CAPACITANCE (µF)
TCM828
TCM829
Output Voltage Ripple vs. Capacitance Output Voltage Ripple vs. Capacitance
450
300
400
V_IN = 4.75V, V_OUT = – 4.0V
350
300
250
V_IN = 3.15V, V_OUT = – 2.5V
200
V_IN = 1.9V, V_OUT = – 1.5V
150
250
V_IN = 4.75V, V_OUT = – 4.0V
200
V_IN = 3.15V, V_OUT = – 2.5V
150
100
V_IN = 1.9V, V_OUT = – 1.5V
100
50
50
0
0 5 10 25 20 25 30 35
CAPACITANCE (µF)
0
05
10 15 20 30 35
CAPACITANCE (µF)
Supply Current
vs. Supply Voltage
120
100
80
TCM829
60
40
TCM828
20
0
1.5 2 2.5 3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
TCM828
Pump Frequency vs. Temperature
14
V_IN = 5.0V
12
V_IN = 3.3V
10
8
V_IN = 1.5V
6
4
2
0
–40
0°C
25°C
85°C
TEMPERATURE (°C)
TCM829
Pump Frequency vs. Temperature
45
40
V_IN = 5.0V
35
V_IN = 3.3V
30
25
V_IN = 1.5V
20
15
10
5
0
–40°C
0°C
25°C
TEMPERATURE (°C)
85°C
TCM828/829-4 5/22/00
6
© 2001 Microchip Technology Inc. DS21488A