Datasheet

LXDC2UR series
Micro DC-DC converter
9
Dec 2014
●LXDC2UR33A-122
1
10
100
1000
10000
100000
20 40 60 80 100 120
Capacitor B1 Life (Tousand Hours)
Capacitor Case Temprature (oC )
Capacitor B1 Life vs Capacitor Case temperature
Vin=5V
The following steps should be taken before the design fix of user’s set for a reliable operation.
1. The ambient temperature of the device should be kept below 85
o
C
2. The IC temperature should be measured on the worst condition of each application. The temperature must be
kept below 125
o
C. An appropriate de-rating of temperature and/or output current should be taken.
3. The MLCC temperature should be measured on the worst condition of each application. Considering the
above figure, it should be checked if the expected B1 life of MLCC is acceptable or not.