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參數(shù)資料
| 型號： | 5D17.030SLC |
| 英文描述： | µP Supervisory Circuits with Windowed (Min/Max) Watchdog and Manual Reset |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 4/4頁 |
| 文件大?。?/td> | 89K |
| 代理商： | 5D17.030SLC |
1 Watt SLC Dual Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
4
3/2001
0
10
20
30
40
50
60
70
80
90
100
LOAD (%)
50
55
60
65
70
75
80
E
EFFICIENCY Vs. LOAD
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (VDC)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
I
INPUT CURRENT Vs. INPUT VOLTAGE
from ambient by knowing that the case temperature rise is
approximately 58
°
C per package watt dissipated.
For example: If a 5D12.040SLC is delivering 0.9 watts at
5V input, at what ambient could it expect to run with no
additional cooling such as moving air
Efficiency is approximately 73% which leads to an input
power of 1.23 watts. The internal power loss is 1.23 - .9 = 0.33
watts. The case temperature rise will be 0.33W x 58
°
C/W=
19.1
°
C. This number is subtracted from the maximum case
temperature rating of 85
°
C to get 65.9
°
C, which is the maximum
ambient operating temperature.
This example calculation is for an application with no extra
air flow for cooling. Extra cooling air will greatly effect the
maximum ambient temperature. Exact internal power loss
depends upon the efficiency, input voltage, and load in the
application.
The above example is a rough approximation to the
maximum ambient temperature. Because of the difficulty of
defining ambient temperature, these calculations should be
verified by actual measurement before committing to a
production design.
0
10
20
30
40
50
60
70
80
90
100
OUTPUT LOAD (%)
-6
-4
-2
0
2
4
6
8
10
N
LOAD REGULATION
4.50
4.75
5.00
5.25
5.50
Input Voltage (VDC)
-15
-10
-5
0
5
10
15
N
Line Regulation
Typical Performance: (Tc=25
°
C)
Figure 4.
Unipolar output voltages up to 34 volts may be generated by
operating the SLC Dual Series converters in a single ended mode.
The CMN pin should not be directly used in your application.
Grounding
The input and output sections are fully floating and isolated
from each other. They may be operated fully floating or with
a common connection between the input and output.
Temperature Derating
The 1 Watt Output SLC series can be operated up to a +85
°
C
case temperature. Case temperature can be roughly calculated
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