Datasheet

TC7660S
DS20001467B-page 4  2001-2013 Microchip Technology Inc.
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 4-1.
FIGURE 2-1: Unloaded Oscillator
Frequency vs. Temperature.
FIGURE 2-2: Supply Current vs.
Temperature (with Boost Pin = V
IN
).
FIGURE 2-3: Output Source Resistance
vs. Supply Voltage.
FIGURE 2-4: Unloaded Oscillator
Frequency vs. Temperature with Boost Pin = V
IN
.
FIGURE 2-5: Voltage Conversion.
FIGURE 2-6: Output Source Resistance
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.
12
10
0
2
4
6
8
-40 -20 0 20 40 10060 80
OSCILLATOR FREQUENCY (kHz)
TEMPERATURE (°C)
V
IN
= 12V
V
IN
= 5V
1000
0
200
400
600
800
-40 -20 0 20 40 10060 80
I
DD
(μA)
TEMPERATURE (°C)
V
IN
= 12V
V
IN
= 5V
I
OUT
= 20mA
T
A
= 25°C
1.5 1211.510.59.58.57.55.5 6.54.52.5 3.5
100
10
30
50
70
OUTPUT SOURCE RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
IN
60
50
0
10
20
30
40
-40 -20 0 20 40 10060 80
OSCILLATOR FREQUENCY (kHz)
TEMPERATURE (°C)
V
IN
= 12V
V
IN
= 5V
Without Load
10K Load
101.0
100.5
100.0
99.5
99.0
98.5
98.0
112111098756423
VOLTAGE CONVERSION EFFICIENCY (%)
INPUT VOLTAGE V
IN
(V)
T
A
= 25°C
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