Datasheet

LTM4620A
26
4620afb
For more information www.linear.com/LTM4620A
APPLICATIONS INFORMATION
Table 2. 1.0V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIRFLOW (LFM) HEAT SINK
LGA
Θ
JA
(°C/W)
BGA
Θ
JA
(°C/W)
Figures 15, 16 5, 12 Figure 12 0 None 6.5 to 7 6.5 to 7
Figures 15, 16 5, 12 Figure 12 200 None 5.5 5.5
Figures 15, 16 5, 12 Figure 12 400 None 5 5
Figures 17, 18 5, 12 Figure 12 0 BGA Heat Sink 6.5 6.5
Figures 17, 18 5, 12 Figure 12 200 BGA Heat Sink 5 5
Figures 17, 18 5, 12 Figure 12 400 BGA Heat Sink 4 4
Table 3. 2.5V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIRFLOW (LFM) HEAT SINK
LGA
Θ
JA
(°C/W)
BGA
Θ
JA
(°C/W)
Figures 19, 20 5, 12 Figure 13 0 None 6.5 to 7 6.5 to 7
Figures 19, 20 5, 12 Figure 13 200 None 5.5 to 6 5.5 to 6
Figures 19, 20 5, 12 Figure 13 400 None 4.5 4.5
Figures 21, 22 5, 12 Figure 13 0 BGA Heat Sink 6.5 to 7 6.5 to 7
Figures 21, 22 5, 12 Figure 13 200 BGA Heat Sink 4 4
Figures 21, 22 5, 12 Figure 13 400 BGA Heat Sink 3.5 3.5
Table 4. 5V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIRFLOW (LFM) HEAT SINK
LGA
Θ
JA
(°C/W)
BGA
Θ
JA
(°C/W)
Figure 23 12 Figure 14 0 None 6.5 to 7 6.5 to 7
Figure 23 12 Figure 14 200 None 5.5 to 6 5.5 to 6
Figure 23 12 Figure 14 400 None 4.5 4.5
Figure 24 12 Figure 14 0 BGA Heat Sink 6.5 to 7 6.5 to 7
Figure 24 12 Figure 14 200 BGA Heat Sink 4 4
Figure 24 12 Figure 14 400 BGA Heat Sink 3.5 3.5
Connect 5V output to EXTV
CC
to increase efficiency.
HEAT SINK MANUFACTURER PART NUMBER WEBSITE
Aavid Thermalloy 375424B00034G www.aavid.com
Cool Innovations 4-050503P
4-050508P
www.coolinnovations.com