Optional Functions
The A-Series 7-15W DC/DC Converters offer numerous electrical/ mechanical
options. Per the Ordering Guide on page 2, the trailing "A" (A-Series) in each
part number pertains to the base part number. Part-number suffi xes are added
after the "A," indicating the selection of standard options. The resulting part
number is a "standard product" and is available to any customer desiring that
particular combination of options. As described below, selecting certain options
will result in the installation of additional pins in certain locations.
Suffi x Description
Blank No V
OUT Trim or On/Off Control functions added (no I/O pins
installed in the pin 3 and pin 5 positions). The pin length remains at
0.2inches (5.08 mm).
T Add a V
OUT Trim function on pin 5. No pin 3 installed.
C Add an On/Off Control function on pin 3 (with positive polarity). No
pin 5 installed.
CT Add the On/Off Control function (with positive polarity) on pin 3 and
add the V
OUT trim function on pin 5.
N Add an On/Off Control function on pin 3 with negative polarity. No
pin 5 installed.
NT Add the On/Off Control function with negative polarity on pin 3 and
add the V
OUT trim function on pin 5.
L1 Trim the pin length to 0.110 ±0.010 inches (2.79 ±0.25mm). This
option requires a minimum order quantity.
L2 Trim the pin length to 0.145 ±0.010 inches (3.68 ±0.25mm). This
option requires a minimum order quantity.
-C RoHS-6 hazardous substance compliance (does not claim EU RoHS
exemption 7b, lead in solder).
* Note: Usage of consecutive "C" and "-C" designations is correct for some
models. Example: UWR-5/3000-D48AC-C
Adaptations
There are various additional confi gurations available on A-Series 7-15W DC/DCs.
Because designating each of them with a standard part-number suffi x would
result in an unmanageable matrix of part numbers, such are designated by
MPS and assigned 5-digit "part-number suffi xes.
UWR-3.3/4250-D48AT-30690
Standard product, 48VIN, 3.3VOUT/4.25A with a VOUT Trim function added in
the pin 3 position, with adapted current limit set point to 6.5A min. and with
removed Input Overvoltage Shutdown function.
UWR-5/3000-D48ACT-30770
UWR-5/3000-D48ACT-30770-Y (RoHS-5)
Standard product, 48VIN, 5VOUT/3A. On/Off Control function (positive polarity)
onpin 3, V
OUT, Trim function added on pin 5. Adaptations: Trim equations are
Tyco/Lucent-compatible. Transformer isolation system has been enhanced to
meet the basic insulation requirements of UL60950-1/EN60950-1. I/O pins
are 25-mil-square Tyco/Lucent compatible. Shielded metal case is connected
to +V
IN pin 1. Input Overvoltage Shutdown function has been removed.
UWR-3.3/4500-D48ANT
Standard UWR-3.3/4250-D48A, 48VIN, 3.3VOUT with slightly higher output
current (4.5A), negative on/off polarity control and a special competitive-
compatible trim.
UWR-3.3/4500-D48ANT accepts trim adjustments to ±10% of nominal V
OUT
not to exceed 15W of maximum output power. Users should carefully consider
the amount of trim added since excessive positive trim may exceed the
overvoltage protection. Excessive negative trim may interfere with proper
regulation.
UWR-3.3/4500-D48ANST Special trim version. See page 5.
UWR-5/3000-D48ANSTHL2-Y
UWR-3.3/4500-D48ANTHL2-Y
Negative on/off polarity, special trim, conformal coating added, 3.68mm pin
length, RoHS-5 compliance (with lead). RoHS-5 compliance requires a sched-
uled quantity order. Not all RoHS-5 “-Y” models are available. Please contact
Product Marketing for further information.
Wide Range Input
Output Confi guration:
U = Unipolar
Nominal Output Voltage:
1.2, 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 Volts
Maximum Output Current
in mA
Input Voltage Range:
D12 = 10-18 Volts (12V nominal)
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
U WR 3000-/ D48 A-5 CT
A-Series
High Reliability
Optional Functions
LX
*Note: Not all model number combinations may be available. Contact MPS.
C-
RoHS-6 Compliant*
PART NUMBER STRUCTURE
www.murata-ps.com/support
UWR Models
Single Output,
High-Density,
6 Amp/15 Watt
DC/DC Converters
MDC_UWR_7-15.I02 Page 12 of 13
