Datasheet

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PART NUMBER STRUCTURE
ULT Series
Thirty-Second-Brick Isolated DC/DC Converters
with 2:1 Wide Input Range
MDC_ULT Series.F05 Page 2 of 26
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE

Root Model 
Output Input
Efficiency Package
VOUT
(V)
IOUT
(A, max.)
Power
(W)
R/N (mV pk-pk)  Regulation (max.)

VIN Nom.
(V)
Range
(V)
IIN, no load
(mA)
IIN, full
load (A)
Typ. Max. Line Load Min. Typ. Case (inches)
ULT-3.3/7.5-D48 3.3 7.5 24.75 45 50 ±0.15% ±0.2% 48 36-75 20 0.6 84% 85.5% 0.92 x 0.75 x 0.35
ULT-5/5-D48 5 5 25 50 75 ±0.1% ±0.125% 48 36-75 20 0.59 87% 89% 0.92 x 0.75 x 0.35
ULT-12/2.5-D48 12 2.5 30 70 100 ±0.075% ±0.125% 48 36-75 20 0.68 90% 92% 0.92 x 0.75 x 0.35
Maximum Rated Output Current
Current in Amps
Thirty-second-brick series (Unipolar)
Nominal Output Voltage
ULT -
/
D48-3.3
7.5 N
Input Voltage Range
D48 = 36-75 Volts (48V nominal)
On/Off Control Logic Option
N = Negative
P = Positive

Please refer to the Part Number Structure when ordering.

All specifi cations are typical at nominal line voltage and full load, +25°C unless
otherwise noted. See detailed specifi cations. External input capacitors are
33F electrolytic and three 1F ceramic. Output ripple is measured with 400F
capacitance across output pins for the 3.3Vout and 5Vout model. The 12Vout model
is measured with 188F. Output caps are necessary for our test equipment and may
not be needed for your application.

Regulation specifi cations describe output voltage deviations from a nominal/midpoint
value to either extreme (50% load step).
C
RoHS Hazardous Substance Compliance
(does not claim EU RoHS exemption 7b–lead in solder)
C = RoHS-6
-
Lx
Pin Length Option (Thru-hole only)
Blank = Standard pin length 0.190˝ (4.8mm)
L1 = 0.110˝ (2.79mm)
➀
L2 = 0.145˝ (3.68mm) ➀
M
SMT Version Option
Blank = Through-hole mount, no SMT
M = Surface mount (MSL Rating 2)
➁
➀ Special quantity order is required; samples available with standard pin length only.
➁ SMT (M) versions not available in sample quantities.
➂ Some model number combinations may not be available. See website or contact your local Murata sales representative.