5523F 查看數據表（PDF） - Sanken Electric co.,ltd.
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5523F Datasheet PDF : 11 Pages
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LC5523F
Single-Stage Power Factor Corrected
Off-Line Switching Regulator IC
Because reliability can be affected adversely by improper storage
environments and handling methods, please observe the following
cautions.
Cautions for Storage
• Ensure that storage conditions comply with the standard
temperature (5°C to 35°C) and the standard relative humidity
(around 40% to 75%); avoid storage locations that experience
extreme changes in temperature or humidity.
• Avoid locations where dust or harmful gases are present and
avoid direct sunlight.
• Reinspect for rust on leads and solderability of the products that
have been stored for a long time.
Cautions for Testing and Handling
When tests are carried out during inspection testing and other
standard test periods, protect the products from power surges
from the testing device, shorts between the product pins, and
wrong connections. Ensure all test parameters are within the
ratings specified by Sanken for the products.
Remarks About Using Silicone Grease with a Heatsink
• When silicone grease is used in mounting the products on a
heatsink, it shall be applied evenly and thinly. If more silicone
grease than required is applied, it may produce excess stress.
• Volatile-type silicone greases may crack after long periods of
time, resulting in reduced heat radiation effect. Silicone greases
with low consistency (hard grease) may cause cracks in the mold
resin when screwing the products to a heatsink.
Our recommended silicone greases for heat radiation purposes,
which will not cause any adverse effect on the product life, are
indicated below:
Type
G746
YG6260
SC102
Suppliers
Shin-Etsu Chemical Co., Ltd.
Momentive Performance Materials Inc.
Dow Corning Toray Co., Ltd.
Cautions for Mounting to a Heatsink
• When the flatness around the screw hole is insufficient, such as when
mounting the products to a heatsink that has an extruded (burred)
screw hole, the products can be damaged, even with a lower than
recommended screw torque. For mounting the products, the mounting
surface flatness should be 0.05 mm or less.
• Please select suitable screws for the product shape. Do not use
a flat-head machine screw because of the stress to the products.
Self-tapping screws are not recommended. When using self-tapping
screws, the screw may enter the hole diagonally, not vertically,
depending on the conditions of hole before threading or the work
situation. That may stress the products and may cause failures.
• Recommended screw torque: 0.588 to 0.785 N●m (6 to 8 kgf●cm).
• For tightening screws, if a tightening tool (such as a driver) hits the
products, the package may crack, and internal stress fractures may
occur, which shorten the lifetime of the electrical elements and can
cause catastrophic failure. Tightening with an air driver makes a
substantial impact. In addition, a screw torque higher than the set
torque can be applied and the package may be damaged. Therefore,
an electric driver is recommended.
When the package is tightened at two or more places, first pre-tighten
with a lower torque at all places, then tighten with the specified torque.
When using a power driver, torque control is mandatory.
Soldering
• When soldering the products, please be sure to minimize the
working time, within the following limits:
260±5°C 10±1 s (Flow, 2 times)
380±10°C 3.5±0.5 s (Soldering iron, 1 time)
• Soldering should be at a distance of at least 2.0 mm from the
body of the products.
Electrostatic Discharge
• When handling the products, the operator must be grounded.
Grounded wrist straps worn should have at least 1 MΩ of
resistance from the operator to ground to prevent shock hazard,
and it should be placed near the operator.
• Workbenches where the products are handled should be
grounded and be provided with conductive table and floor mats.
• When using measuring equipment such as a curve tracer, the
equipment should be grounded.
• When soldering the products, the head of soldering irons or the
solder bath must be grounded in order to prevent leak voltages
generated by them from being applied to the products.
• The products should always be stored and transported in Sanken
shipping containers or conductive containers, or be wrapped in
aluminum foil.
LC5523F-DS
SANKEN ELECTRIC CO., LTD.
10
November 26, 2012
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