Single Output
UST Models
Low-Cost, High-Reliability
3 Watt, DC/DC Converters
Features
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Lowest cost! Highest reliability!
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100% SMT-on-pcb, including magnetics
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100% automatically assembled
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Standard "DIP" package and pinouts
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Fully isolated, 1000Vdc guaranteed
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5, 12 or 15 Volt outputs
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Choice of 3 wide-range inputs:
4.5-9 Volts
9-18 Volts
18-72 Volts
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Guaranteed efficiencies to 73%
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–40 to +75°C full-power operation
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Internal input/output filtering
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UL1950/C22.2 No. 950/IEC950 certified
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Modifications and customs for OEM’s
Rarely, has a Series of low-power DC/DC converters been defined by both low
cost and DATEL's made-in-the-USA quality and reliability. Our new UST Series of
single-output DC/DC’s achieves this best-of-both-worlds status by implementing
a proven circuit architecture (170-200kHz flyback design) as a full, SMT-on-pcb
assembly (including surface-mount magnetics) that is truly 100% automatically
assembled. Packaged in miniature 1.25" x 0.8", DIP-like plastic packages (UL94V-0
rated) and requiring no external components, UST Series DC/DC’s bring true component-like convenience to designers of today’s distributed power systems.
Output voltages are 5, 12 or 15 Volts. Input voltage ranges are 4.5-9V ("D5"
models), 9-18V ("D12" models) or an ultra-wide 18-72V ("D48" models). UST
DC/DC’s are fully isolated (1000Vdc guaranteed) and include input (pi type) and
output filters within their package. Output transient response is a quick 200µsec,
while output ripple and noise are typically 75mVp-p.
These rugged modules are fully encapsulated with a thermally conductive potting compound that contributes to their outstanding moisture/vibration resistance
and impressive MTBF. They operate over the full –40 to +75°C temperature range
without derating. All models have been thoroughly characterized (electrically, mechanically and thermally), qualified (including HALT), and EMI/EMC tested. Additionally, they are certified to UL1950, CSA 22.2 No. 950 and IEC950.
DATEL’s UST Model 3W DC/DC’s are excellent selections for telecom/datacom,
computer and process-control applications demanding small size, low cost and high
reliability. If required, their design "flexibility" allows for easy modification to your application-specific requirements.
+VOUT
+VIN
COMMON
–VIN
PWM
CONTROLLER
OPTO
ISOLATION
Figure 1. Simplified Schematic
www.cd4power.com
REFERENCE &
ERROR AMP
