鈻?/div>
DATEL鈥檚 new USN D5 Series SIP鈥檚 (single-in-line packages) are non-isolated
DC/DC converters that accept a 5V input (4.5V to 5.5V input range) and deliver 1.5V,
1.8V, 2.5V or 3.3V outputs at either 8 or 10 Amps. USN D5 SIP鈥檚 are designed to take
on-board 5V power and convert it, with the highest ef鏗乧iency in the smallest space, to
any lower voltage required by today鈥檚 current-hungry DSP鈥檚, ASIC鈥檚 and CPLD鈥檚.
USN鈥檚 are ideal for true point-of-use power processing. They occupy a mere
0.8 square inches of board space (2" length, 0.4" width, 0.53" height). Their fully
synchronous, 鏗亁ed-frequency (200kHz), buck topology delivers high ef鏗乧iency (91%
for 3.3V
OUT
models), tight regulation (鹵0.1%/鹵0.5% line/load), stable no-load opera-
tion, and low output noise (25mVp-p for 1.5/1.8V
OUT
models).
The fully functional USN鈥檚 feature input undervoltage shutdown, output overcur-
rent detection, continuous short-circuit protection, a wide-range output-voltage trim
function, a remote on/off control pin, and an optional sense pin.
USN鈥檚 are pin compatible with similar devices from Lucent/Tyco, Artesyn Tech-
nologies and Power-One. USN鈥檚, however, deliver more current (10A vs. 6A), from
a smaller package (2.0" vs. 2.5" long), with better accuracy (鹵1% max.), tighter
regulation, less noise, and superior temperature performance. If a USN SIP is
operated at only 6 Amps, for example, it can reliably operate up to +65擄C (with
100lfm air 鏗俹w).
If your low-voltage, high-current requirements have made the use of inef鏗乧ient
linear regulators impractical, take a look at one of DATEL鈥檚 easy-to-use, low-cost
USN SIP鈥檚. All devices are UL1950/EN60950 certi鏗乪d and EMC compliant. UL, CB
and EMC reports are available upon request.
+INPUT
+OUTPUT
+SENSE
鉃€
(OPTIONAL)
COMMON
COMMON
10k鈩?/div>
CURRENT
SENSE
ON/OFF
CONTROL
PWM
CONTROLLER
REFERENCE &
ERROR AMP
TRIM
鉃€
For devices with the sense-pin option ("R" suf鏗亁), the
feedback path is through the +Sense pin and not the
+Output pin.
Figure 1. Simpli鏗乪d Schematic
DATEL, Inc., Mans鏗乪ld, MA 02048 (USA) 路 Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 路 Email: sales@datel.com 路 Internet: www.datel.com
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