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參數資料
型號: LM79
文件頁數: 19/31頁
文件大小: 481K
代理商: LM79
Functional Description
(Continued)
Counts are based on 2 pulses per revolution tachometer outputs.
RPM
Time per Revolution
Counts for “Divide by 2”
(Default) in Decimal
153 counts
219 counts
255 counts
(maximum counts)
Comments
4400
3080
2640
13.64 ms
19.48 ms
22.73 ms
Typical RPM
70% RPM
60% RPM
Mode Select
Nominal
RPM
Time per Revolution
Counts for the
70%
RPM
Time per Revolution
Given Speed in Decimal
153
153
153
153
for 70% RPM
9.74 ms
19.48 ms
38.96 ms
77.92 ms
Divide by 1
Divide by 2
Divide by 4
Divide by 8
8800
4400
2200
1100
6.82 ms
13.64 ms
27.27 ms
54.54 ms
6160
3080
1540
770
DS100036-14
(a) Fan with Tach Pull-Up to +5V
DS100036-15
(b) Fan with Tach Pull-Up to +12V, or Totem-Pole
Output and Resistor Attenuator
DS100036-16
(c) Fan with Tach Pull-Up to +12V and Diode Clamp
DS100036-17
(d) Fan with Strong Tach Pull-Up or Totem Pole Output
and Diode Clamp
FIGURE 9. Alternatives for Fan Inputs
L
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19
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相關代理商/技術參數
參數描述
LM7900 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3- TERMINAL NEGATIVE OUTPUT VOLTAGE REGULATORS
LM7900-220M 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:NEGATIVE VOLTAGE REGULATOR
LM7900-SMD 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:NEGATIVE VOLTAGE REGULATOR
LM7905 制造商:TGS 制造商全稱:Tiger Electronic Co.,Ltd 功能描述:3-Terminal 1A Positive Voltage Regulator
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