TA0321 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TA0321' PDF : 12 Pages View PDF
TA0321
5 STMicroelectronics solution
5 STMicroelectronics solution
To offer Satellite Set Top Box manufacturers the best trade-off between cost and lightning
protection of the LNB voltage regulator, STMicroelectronics has introduced the new dedicated
and optimized LNBTVSx-22x devices.
5.1 A segmented & differentiated approach
The product strategy is based on a segmented approach to provide the best suitable protection
device relative to the various LNB voltage regulator absolute maximum ratings capabilities.
It means that depending on the LNB voltage regulator used in the application and depending on
the lightning surge test level applied, a different LNBTVSx-22x has to be implemented to
optimize the cost and robustness of the total solution.
As an example:
When the LNBP21 voltage regulator is used and if the box needs to comply with the level 4 of
the IEC61000-4-5 (4 kV), the best suitable protection device to be implemented is the
LNBTVS4-222S.
See Table 3 for recommended fit.
5.2 Features
● 3 kV, 4 kV and 6 kV protection (8/20 µs)
● Axial & SMD package
● Low Vf
● Low Clamping factor
● Fast Response Time
● UL Recognized
Figure 6. Surge tests +4 kV (Standard IEC61000-4-5 - with series resistor of 12 Ω)
Device only
Device on test board LNBP20
7/12
Share Link: 
