參數(shù)資料
型號: MC7918ACT
廠商: MOTOROLA INC
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: LOOM KIT, 3 OUTPUT; RoHS Compliant: Yes
中文描述: 18 V FIXED NEGATIVE REGULATOR, PSFM3
封裝: HEAT SINK, PLASTIC PACKAGE-3
文件頁數(shù): 10/12頁
文件大?。?/td> 186K
代理商: MC7918ACT
MC7900
10
MOTOROLA ANALOG IC DEVICE DATA
Figure 10. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
R
θ
,
J
J
°
PD(max) for TA = +50
°
C
PD
30
40
50
60
70
80
0
10
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
Minimum
Size Pad
2.0 oz. Copper
L
Free Air
Mounted
Vertically
R
θ
JA
1.0
1.5
2.0
2.5
3.0
3.5
DEFINITIONS
Line Regulation
– The change in output voltage for a
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Load Regulation
– The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation
– The maximum total
device dissipation for which the regulator will operate within
specifications.
Input Bias Current
– That part of the input current that is
not delivered to the load.
Output Noise Voltage
– The rms AC voltage at the
output, with constant load and no input ripple, measured over
a specified frequency range.
Long Term Stability
– Output voltage stability under
accelerated life test conditions with the maximum rated
voltage listed in the devices’ electrical characteristics and
maximum power dissipation.
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