DHC2803SK データシートの表示（PDF） - M.S. Kennedy
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DHC2803SK Datasheet PDF : 6 Pages
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M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
HI-REL DESIGN
• WAVE SOLDERABLE PACKAGE
• ALL CERAMIC CAPACITORS
• SURFACE MOUNT MAGNETICS
• WITHSTANDS 5000G
6W
DC-DC
CONVERTERS
ISO-9001 CERTIFIED BY DSCC
DHC2800S
SERIES
(315) 701-6751
FEATURES — SINGLE OUTPUT
• REPLACES APEX DHC2803S & DHC2805S
• NO DERATING — -55°C to +125°C
• WIDE SUPPLY RANGE — 12V to 50V
• HIGH ISOLATION — 500V
• HIGH POWER DENSITY — 17W/IN3
• OUTPUT VOLTAGE ADJUSTMENT —
STANDARD
• REMOTE SHUTDOWN
• OPERATES TO 11VIN AT 5W
• AVAILABLE WITH 3.3V OR 5V OUTPUTS
• SEE DAC2800S SERIES FOR 12V AND 15V VERSIONS
TYPICAL APPLICATION WITH OPTIONS
DESCRIPTION
The DHC2800S series of DC-DC converters provides the
ruggedness, reliability, and features required to meet the
advanced design challenges of today’s hi-rel market. This is
accomplished while retaining a power density of 17 W/in3 and
425 mW/gram of power/package performance. The use of
advanced substrate and reflow soldering techniques during
construction results in a rugged, cost-effective, and com-
pletely solderable package.
DHC2800S hybrid converter series utilizes all ceramic
BLOCK DIAGRAM
capacitors and surface mount magnetics to provide reliable
operation at all operating temperatures while surviving very
6
1
high G forces.
DHC2800S standard features include output fault monitor-
ing and/or turn on voltage point programming via the shut-
2
down pin. All three functions may be implemented simulta-
neously with a minimum of external components. An output
voltage adjustment/load compensation pin is also standard.
PWM
5 FEED FORWARD
CONTROLLER
Fault tolerant design protects these converters from most
external circuit faults. The output and output adjust pins will
7
withstand +35 V while the shutdown pin will withstand +50 V
protecting the converters from a variety of system or board
ERROR AMPLIFIER
REFERENCE AND
ISOLATION
faults i.e. solder bridges etc. Unique load fault protection
circuitry allows this converter to pull up loads having difficult
3
static load line characteristics and allows short term load
excursions significantly beyond ratings in most applications.
A transformer isolated forward converter topology operat-
EXTERNAL CONNECTIONS
ing at a switching frequency of 400 kHZ allows operation over
a wide input voltage range. Internal filtering of both input and
output eliminates the need for external capacitors in many
applications.
The 8-pin DIP package is hermetically sealed and isolated
from the internal circuits. Heat sinking is recommended for full
1 +OUTPUT
2 -OUTPUT
3 ADJUST/COMP
4 NO CONNECTION
5 SHUTDOWN PLUS
8 CASE
7 -INPUT
6 +INPUT
power operation at elevated ambient temperatures.
1
Rev. A 3/01
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