AP1518 데이터 시트보기 (PDF) - Anachip Corporation
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AP1518 Datasheet PDF : 12 Pages
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300KHz, 3A PWM Buck DC/DC Converter
AP1518
Function Description (Continued)
Package thermal resistance and junction
temperature rise numbers are all approximate, and
there are many factors that will affect these
numbers. Some of these factors include board
size, shape, thickness, position, location, and even
board temperature. Other factors are, trace width,
total printed circuit copper area, copper thickness,
single or double-sided, multi-layer board and the
amount of solder on the board. The effectiveness
of the PC board to dissipate heat also depends on
the size, quantity and spacing of other components
on the board, as well as whether the surrounding
air is still or moving. Furthermore, some of these
components such as the catch diode will add heat
to the PC board and the heat can vary as the input
voltage changes. For the inductor, depending on
the physical size, type of core material and the DC
resistance, it could either act as a heat sink taking
heat away from the board, or it could add heat to
the board.
Marking Information
(1) TO263-5L
( Top view )
Part Number
1518
YY WW X
Logo
ID code
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
(2) TO220-5L
( Top view )
Part Number
1518
YY WW X
Logo
ID code
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 29, 2004
9/12
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