參數(shù)資料
型號(hào): LH1781-2RD5
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT AC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT PACKAGE-32/11
文件頁(yè)數(shù): 11/21頁(yè)
文件大?。?/td> 984K
代理商: LH1781-2RD5
H Series Data Sheet
70 Watt AC-DC Converters
BCD20019 Rev AA
Page 19 of 21
www.power-one.com
3
5.1 V
4.875 V
0
Vi [VDC]
0
t
Vti + Vhi
Vi
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
UV high
VV low
VV
0
V2
t
Vo1
0
VV high
VV low
VV
0
V2
Vi
Vti
4
Output voltage failure
0
VV high
VV low
VV
3
Vti + Vhi
tlow min 2
3
4
VV high
VV low
VV
0
V3
t
3
tlow min 2
3
th 1
2.0 V
th 1
4
3
4
tlow min 2
V3
5.1 V
4.875 V
0
Vo1
2.0 V
Input voltage monitoring
Output voltage monitoring
11010a
t
Fig. 24
Relationship between Vi, Vo1, VV, IV, and Vo1/Vo nom
versus time.
1 VME request: minimum 4 ms
2 tlow min = 40 – 200 ms, typically 80 ms
3 VV level not defined at Vo1 < 2.0 V
4 The V signal drops simultaneously with the output voltage, if
the pull-up resistor R P is connected to Vo1+. The V signal
remains high, if R P is connected to an external source.
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