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TC962 Datasheet

  • TC962

  • High Current Charge Pump DC-to-DC Converter

  • 12頁(yè)

  • MICROCHIP   MICROCHIP

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TC962
4.0
Note:
TYPICAL CHARACTERISTICS
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.
Circuit of Figure 3-1, C
P
= C
R
= 10碌F, C
PESR
鈮?/div>
C
RESR
鈮?/div>
1鈩?
Supply Current vs. Temperature
700
600
10k
Oscillator Frequency vs. C
OSC
20
T
A
= +25擄C
18
Frequency vs. Temperature
C
OSC
= FREQ x 2 = OPEN
SUPPLY CURRENT (碌A(chǔ))
400
300
200
100
0
-60 -40 -20
V + = 15V
FREQUENCY (Hz)
1k
FREQUENCY (kHz)
1
10
100
1000
10,000
500
16
14
12
10
8
100
V + = 15V
10
0 20 40 60 80 100 120 140
TEMPERATURE (擄C)
CAPACITANCE (pF)
6
-60 -40 -20
0 20 40 60 80 100 120 140
TEMPERATURE (擄C)
Output Resistance vs. Temperature
80
OUTPUT RESISTANCE (
鈩?/div>
)
70
60
50
40
30
20
10
-60 -40 -20
V+ = 15V I
L
= 20mA
10
0
4.5
V+ = 5V I
L
= 3mA
50
Current vs. Zener Voltage
POWER CONVERSION EFFICIENCY (%)
T
A
= +25擄C
Power Conversion Efficiency vs. I
LOAD
100
90
80
70
60
50
40
30
20
10
0
8
16 24 32 40 48 56
64 72
80
SUPPLY
CURRENT
EFFICIENCY
T
A
= +25擄C
150
SUPPLY CURRENT (mA)
135
120
105
90
75
60
45
30
15
0
LOAD CURRENT (mA)
CURRENT (mA)
40
30
20
0 20 40 60 80 100 120 140
TEMPERATURE (擄C)
4.0
5.5
6.0
6.5
7.0
ZENER VOLTAGE (V)
Output Resistance vs. Input Voltage
110
100
T
A
= +25擄C
OUTPUT RESISTANCE (
鈩?/div>
)
90
80
70
60
50
40
30
20
10
0
2
4
6 8 10 12 14 16 18
INPUT VOLTAGE (V)
20
3mA
20mA
DS21484B-page 6
錚?/div>
2002 Microchip Technology Inc.

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