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LT1302CS8 Datasheet(PDF) 13 Page - Linear Technology

No. de pieza LT1302CS8
Descripción Electrónicos  Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters
PDF  16 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LT1302CS8 Datasheet(HTML) 13 Page - Linear Technology

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13
LT1302/LT1302-5
APPLICATIONS INFORMATION
As an example, consider a boost converter with the
following specifications:
VIN = 3V
VOUT = 6V
IOUT = 700mA
Total power loss in the LT1302, assuming R = 0.15
Ω and
VD = 0.45V, is:
Using the CS8 package with 100 sq. mm topside and
backside heat sinking:
∆T = (312mW)(84°C/W) = 25.9°C rise
With the N8 package:
∆T = 31.2°C
At a 70
°C ambient, die temperature would be 101.2°C.
PmA
mW
mW
mW
D =
() ( )
+
−
××


−
+
−
××


+ ()
+−
()
=+
=
700
0 15
60 45
3
07 6 0 15
3
60 45
3
07 6 0 15
3
0 7 6 0 45 3
27
223
89
312
2
2
.
.
..
.
..
..
Ω



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