參數(shù)資料
型號: LTC3588IMSE-2#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封裝: LEAD FREE, PLASTIC, MSOP-10
文件頁數(shù): 6/18頁
文件大?。?/td> 400K
代理商: LTC3588IMSE-2#PBF
LTC3588-2
14
35882fa
The frequency of the emission will be 120Hz for magnetic
ballasts but could be higher if the light uses electronic
ballast. The LTC3588-2 bridge rectifier can handle a wide
range of input frequencies.
Figure 9 shows the LTC3588-2 powered by a 48V com-
munications line. In this example, 1mA is the maximum
currentthatisallowedtobedrawn.The28kcurrentlimiting
resistor sets this current as the LTC3588-2 will shunt VIN
at 20V. The advantage of this scheme is that the current at
the output is multiplied by the ratio of VIN to VOUT (less the
loss in the buck converter). This is useful in cases where
greater current is needed at the output than is available
at the input. The high UVLO of 16V prevents any start-up
issue as there is already a good multiplication factor at
applicaTions inForMaTion
Figure 9. Current Fed 3.45V LiFePO4 Battery Charger
35882 F09
PZ1
VIN
CAP
VIN2
D1
D0
PZ2
PGOOD
SW
VOUT
LTC3588-2
GND
28k
1mA
LiFePO4
+
22H
VOUT
3.45V
3.5mA
PGOOD
47F
25V
1F
6V
48V
4.7F
6V
10F
6V
that level. This same technique can be extended to AC
source that also have limited current available at the input.
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LTC3588IDD-2#PBF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
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