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LR745 数据表(PDF) 4 Page - Supertex, Inc

部件名 LR745
功能描述  High Input Voltage SMPS Start-up Circuit
PDF  5 Pages
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制造商  SUTEX [Supertex, Inc]
网页  http://www.supertex.com
标志 SUTEX - Supertex, Inc

LR745 数据表(HTML) 4 Page - Supertex, Inc

  LR745 Datasheet HTML 1Page - Supertex, Inc LR745 Datasheet HTML 2Page - Supertex, Inc LR745 Datasheet HTML 3Page - Supertex, Inc LR745 Datasheet HTML 4Page - Supertex, Inc LR745 Datasheet HTML 5Page - Supertex, Inc  
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background image
4
Figure 2
LR745
0.0
3.0
2.0
1.0
0.0
12.0
8.0
4.0
0.0
30.0
20.0
10.0
0.0
4.0
PWM IC Start Threshold Voltage
LR7 VOFF Trip Point
Auxiliary Supply Powers PMW IC
t
t
t
t
8.0
12.0
13.5
16.0
LR7 Start-up Waveforms
VOUT
(Volts)
I
Stage
Stage
Stage
IIN
(mA)
VAUX
(Volts)
IAUX
(mA)
VAUX = 12V
IAUX = 20mA
IIN ≈ 0mA
III
II



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