
A
12 Watt LV Single Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
3
3/2001
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BOTTOM VIEW
SIDE VIEW
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
General Information
The universal 3.5 to 16 volt input allows you to specify your
system for operation from any 5 volt logic supply or a 4.8 to 12
volt nominal battery input.
The series is also mindful of battery operation for industrial,
medical control and remote data collection applications. The
remote ON/OFF pin places the converter in a very low power
mode that draws typically less than 6 mA from the input
source.
Noise has also achieved new lows in this single design,
while the industry standard is to specify output noise as 1 to
5% peak to peak typical with no mention of measurement
bandwidth. The LV converters achieve noise levels of 40 mV
peak to peak and are fully specified and tested to a wide
bandwidth of 0-20 MHz.
Five sided shielding is standard along with specified
operation over the full industrial temperature range of -40 to
+85° C case temperature.
* ON/OFF MAY BE LEFT FLOATING IF NOT USED
Applying The Input
Figure 1 shows the recommended input connections for the
LV Single DC/DC converter. A fuse is recommended to
protect the input circuit and should not be omitted. The fuse
serves to prevent unlimited current from flowing in the case of
a catastrophic system failure.
Figure 1.
If the source impedance driving the LV Converter is more than 0.05
ohms the optional capacitor C2 may be required (See text for more
information). Optional transient protector diode D1 may be used if
desired for added protection. The fuse serves as a catastrophic
failure protector and should not be omitted.
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