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SI-8090JF 数据表(PDF) 6 Page - Allegro MicroSystems

部件名 SI-8090JF
功能描述  Step-Down to 9.0 V, 1.5 A, DC/DC Converter
Download  9 Pages
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制造商  ALLEGRO [Allegro MicroSystems]
网页  http://www.allegromicro.com
标志 ALLEGRO - Allegro MicroSystems

SI-8090JF 数据表(HTML) 6 Page - Allegro MicroSystems

  SI-8090JF Datasheet HTML 1Page - Allegro MicroSystems SI-8090JF Datasheet HTML 2Page - Allegro MicroSystems SI-8090JF Datasheet HTML 3Page - Allegro MicroSystems SI-8090JF Datasheet HTML 4Page - Allegro MicroSystems SI-8090JF Datasheet HTML 5Page - Allegro MicroSystems SI-8090JF Datasheet HTML 6Page - Allegro MicroSystems SI-8090JF Datasheet HTML 7Page - Allegro MicroSystems SI-8090JF Datasheet HTML 8Page - Allegro MicroSystems SI-8090JF Datasheet HTML 9Page - Allegro MicroSystems  
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SI-8090JF
Step-Down
to 9.0 V, 1.5 A,
DC/DC Converter
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
Switching
Regulators
6
Layout Guideline
APPLICATIONS INFORMATION (cont.)
Thermal Protection. Circuitry turns off the switching
transistor when the junction temperature rises above 150°C.
It is intended only to protect the device from failures due to
excessive junction temperatures and should not imply that
output short circuits or continuous overloads are permitted.
Heat Radiation and Reliability. The reliability of the
IC is directly related to the junction temperature (T
J) in its
operation. Accordingly, careful consideration should be
given to heat dissipation. The graph on page 2 illustrates
the effect of thermal resistance on the allowable package
power dissipation.
When mounting to a heat sink, apply silicone grease (Shin-
Etsu Chemical G746, Dow Corning Toray Silicone SC102,
or Toshiba Silicone SY6260). Recommended mounting
hardware torque: 0.588 ~ 0.686 Nm or 6.0 ~ 7.0 kgf•cm
(4.34 ~ 5.06 lbf•ft).
The junction temperature (T
J) can be determined from
either of the following equations:
T
J = (PDR
θJA) + TA
or
T
J = (PDR
θJC) + TC
where P
D = VIII – VOIO – VFIO(1 – [VO/VI])
or the adjacent graph,
V
F = the Schottky diode forward voltage, and
RθJC = 6°C/W.


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