LT1302-5 Linear Technology, LT1302-5 Datasheet - Page 13
LT1302-5
Manufacturer Part Number
LT1302-5
Description
Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters
Manufacturer
Linear Technology
Datasheet
1.LT1302-5.pdf
(16 pages)
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APPLICATIONS
As an example, consider a boost converter with the
following specifications:
Total power loss in the LT1302, assuming R = 0.15 and
V
Using the CS8 package with 100 sq. mm topside and
backside heat sinking:
With the N8 package:
At a 70 C ambient, die temperature would be 101.2 C.
D
V
V
I
P
= 0.45V, is:
OUT
D
IN
OUT
T = (312mW)(84 C/W) = 25.9 C rise
T = 31.2 C
223
= 3V
= 700mA
= 6V
700
mW
mA
89
2
mW
0 15
U
INFORMATION
312
U
mW
3
0 7 6 0 15
6 0 45
W
3
U
2
3
0 7 6 0 15
6 0 45
3
0 7 6 0 45 3
27
LT1302/LT1302-5
13
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