Datasheet

 2002-2011 Microchip Technology Inc. DS21465C-page 3
TC7660
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwise indicated, C
1
= C
2
= 10 µF, ESR
C1
= ESR
C2
= 1 , T
A
= 25°C. See Figure 1-1.
FIGURE 2-1: Operating Voltage vs.
Temperature.
FIGURE 2-2: Output Source Resistance
vs. Supply Voltage.
FIGURE 2-3: Frequency of Oscillation vs.
Oscillator Capacitance.
FIGURE 2-4: Power Conversion
Efficiency vs. Oscillator Frequency.
FIGURE 2-5: Output Source Resistance
vs. Temperature.
FIGURE 2-6: Unloaded Oscillator
Frequency vs. Temperature.
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.
-2
5
0
+2
5
+7
5
+1
00
+12
5
12
10
8
6
4
2
+
50
-
55
SUPPLY VOLTAGE (V)
TEMPERATURE
(
°
C
)
0
SU
PPLY V
O
LTA
G
E RAN
GE
7 8
10k
1k
100Ω
OUTPUT SOURCE RESISTANCE (Ω)
6543210
SUPPLY VOLTAGE (V)
10Ω
OSCILLATOR CAPACITANCE (pF)
10k
OSCILLATOR FREQUENCY (Hz)
1
1k
100
10
10 100 1000
10k
V
+
= +5V
OSCILLATOR FREQUENCY (Hz)
100
POWER CONVERSION EFFICIENCY (%)
98
96
92
90
88
86
84
82
80
94
100 1k
10k
V
+
= +5V
I
OUT
= 1 mA
I
OUT
= 15 mA
500
450
400
200
150
100
50
0
-55 -25 0 +25 +50 +75 +100 +125
TEMPERATURE (°C)
OUTPUT SOURCE RESISTANCE (Ω)
V
+
= +2V
V
+
= +5V
I
OUT
= 1 mA
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
20
-55
18
16
14
12
10
8
6
-25 0 +25 +50 +75 +100 +125
V
+
= +5V