
2002 Microchip Technology Inc.
DS21367B-page 9
TC1221/TC1222
5.0
TYPICAL CHARACTERISTICS
Circuit of Figure 4-3, V
IN
= +5V, C1 = C2 = C3, T
A
= 25
°
C unless otherwise noted.
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
TC1221 Supply Current vs. Supply Voltage
50
100
150
200
250
300
350
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
SUPPLY VOLTAGE (V)
S
μ
A
C1 = C2 = C3 = 1
μ
F,
RL =
∞
, +25
°
C
5.5
TC1221 Output Resistance vs. Supply Voltage
35
40
45
50
55
60
65
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
O
C1 = C2 = C3 = 1
μ
F, +25
°
C
TC1221 Output Voltage Ripple
vs. Capacitance, C
2
0
50
100
150
200
250
300
0
5
CAPACITANCE (
μ
F)
10
15
O
V
IN
= 5.0V
V
IN
= 3.3V
V
IN
= 3.3V, RL = 1K, +25
°
C
V
IN
= 5.0V, RL = 1K, +25
°
C
O
V
IN
= 5.0V
0
100
200
300
400
500
600
0
5
CAPACITANCE (
μ
F)
10
15
TC1221 Output Voltage Droop
vs. Capacitance, C
1
= C
2
V
IN
= 3.3V
V
IN
= 3.3V, RL = 1K, +25
°
C
V
IN
= 5.0V, RL = 1K, +25
°
C
TC1221 Oscillator Frequency
vs. Supply Voltage
90
100
110
120
130
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
O
SUPPLY VOLTAGE (V)
C1 = C2 = C3 = 1
μ
F,
RL =
∞
, +25
°
C