ration (2.3˝ x 2.4˝ x 0.40˝). All models in our new
UCH Series meet UL/EN60950-1 safety require-
ments, including each European country’s devia-
tions. All models have BASIC insulation; guarantee
2250Vdc (in to out) isolation; and because they are
designed with Class B thermal insulation, satisfy
all safety requirements over their full operating
temperatures. Construction/attach meets stringent
RoHS-6 specifications.
UCH Models are designed for demanding tele-
com, datacom and networking applications. Their
“semi-synchronous-rectifier” design achieves
impressive efficiencies. Output voltages are
1.8 to 15 Volts. The input voltage range is 36 to 75
or 18 to 36 Volts. All models meet the Low Voltage
Directive (LVD).
For high reliability and affordability, DATEL
utilizes high-speed automatic assembly to
construct the UCH’s proven SMT-on-pcb designs.
An optional baseplate offers full output power at
maximum temperature.
UCH’s feature input filters, input undervoltage
and overvoltage lockout, output current limiting,
short-circuit protection, and thermal shutdown.
Additionally, all devices have output trim capability
and an on/off control pin that can be ordered with
either polarity.
Typical Unit
FEATURES
Standard “half-brick” configuration
Designed to meet UL/EN60950-1 safety
approvals (BASIC insulation)
Fully isolated, 2250Vdc guaranteed
Output voltages: 1.8 – 15 Volts
V
IN
range: 36-75V or 18-36V
Full 50-150 Watt output power
Reliable SMT-on-pcb construction
Input under and output overvoltage shutdown
Output current limiting and short-circuit
protection
On/off, V
OUT
trim and sense functions
Modifications and customs for OEMs
RoHS-6 construction/attach
Contents
Description, Photograph, Connection Diagram
Ordering Guide, Model Numbering
Mechanical Specs, Input/Output Pinout
Detailed Electrical Specifications
Soldering Guidelines
Application Notes
Performance Data
Page
1
2
3
4
8
10
15
+SENSE
(6)
+V
IN
(4)
+V
OUT
(5)
CASE
(2)
SWITCH
CONTROL
–V
OUT
(9)
–V
IN
(1)
PMW
CONTROLLER
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
OPTO
ISOLATION
REFERENCE &
ERROR MAP
–SENSE
(8)
V
OUT
TRIM
(7)
Typical topology is shown.
*Can be ordered with positive (standard)
or negative (optional) polarity.
For full details go to
www.murata-ps.com/rohs
REMOTE*
ON/OFF
CONTROL
(3)
Figure 1. Simplified Schematic
www.murata-ps.com
05 Nov 2009
email: sales@murata-ps.com
MDC_UCH Models.A20_long
Page 1 of 18
Single Output UCH Models
Isolated, “Half-Brick”
1.8−15V Output DC/DC Converters
Performance Specifications and Ordering Guide
➀
ORDERING GUIDE
Output
R/N (mVp-p)
➁
Regulation (Max.)
➂
Root Family
➀
UCH-1.8/40-D48N-C
UCH-2.5/40-D48N-C
UCH-3.3/10-D24P-C
UCH-3.3/10-D48N-C
UCH-3.3/15-D48N-C
UCH-3.3/35-D24P-C
UCH-3.3/30-D48N-C
UCH-5/10-D48N-C
UCH-5/20-D24P-C
UCH-5/30-D48N-C
UCH-12/4.2-D48N-C
UCH-12/12.5-D48N-C
UCH-15/6.7-D48N-C
V
OUT
I
OUT
Power
(Volts) (Amps) (Watts)
1.8
2.5
40
40
10
10
15
35
30
10
20
30
4.2
12.5
6.7
72
100
33
33
49.5
115.5
99
50
100
150
50.4
150
100.5
Typ.
50
Max.
100
100
Line
±0.125%
±0.1%
±0.2%
±0.2%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
Load
±0.25%
±0.2%
Input
I
IN
, I
IN
, full
V
IN
Nom. Range no load load
(Volts) (Volts) (mA) (Amps)
48
48
24
48
48
24
48
48
24
36-75
36-75
18-36
36-75
36-75
18-36
36-75
36-75
18-36
50
50
1.72
2.34
1.54
0.77
1.16
5.41
2.29
1.17
4.6
3.43
1.16
3.37
2.28
Efficiency
Min.
85%
87.5%
Typ.
87%
Package C61
Case
inches
(mm)
Pinout
3.3
50
80
87%
89%
100
5
12
12
15
60
50
60
80
50
70
150
100
150
150
±0.25%
48
36-75
90
2.4×2.28×0.40
90%
(61×57.9×10.2)
89%
90.5%
89%
91%
87.5% 90.5%
89% 92.6%
90%
92%
89%
85.5%
P17
➀
Please refer to the full model number structure for additional ordering part numbers and options.
➁
All specifications are at nominal line voltage and full load, +25 °C. unless otherwise noted. See detailed specifications. Output capacitors are 1 μF ceramic in parallel with 10 μF electrolytic . Input cap is 22
μF, low ESR. I/O caps are necessary for our test equipment and may not be needed for your application
PART NUMBER STRUCTURE
U CH
-
5
/
30
-
D48 N B H LX
-
C
Output
Configuration:
Unipolar Single Output
Half-brick package
Nominal Output Voltage
Maximum Rated Output:
Current in Amps
Input Voltage Range:
D24
= 18-36 Volts
D48
= 36-75 Volts
RoHS Hazardous Materials Compliance
C =
RoHS-6 (does
not claim EU RoHS exemption 7b–lead in solder),
standard
Y =
RoHS-5 (with lead), optional, special order
Pin Length Option
Blank =
Standard pin length, 0.180 inches (4.6mm)
L1 =
0.110 inches (2.79mm)*
L2 =
0.145 inches (3.68mm)*
* Special quantity order is required.
Optional Conformal Coating
Blank =
No coating, standard
H =
Coating added, optional special order
Optional Baseplate
Blank =
No Baseplate, standard
B =
Baseplate installed, optional quantity order
On/Off Control Polarity
P =
Positive polarity (standard for D24, optional for D48)
N =
Negative polarity (standard for D48, optional for D24)
Note:
Some model number combinations
may not be available. Contact Murata
Power Solutions for availability.
www.murata-ps.com
05 Nov 2009
email: sales@murata-ps.com
MDC_UCH Models.A20_long
Page 2 of 18
Single Output UCH Models
Isolated, “Half-Brick”
1.8−15V Output DC/DC Converters
MECHANICAL SPECIFICATIONS
2.30
(58.4)
A
User’s thermal surface and hardware
Recommended threaded insert torque
is 0.35-0.55 N-M or 3-5 in-lbs.
0.50
(12.7)
0.015 min. clearance
between standoffs and
highest component
Pin Diameters:
Pins 1-4, 6-8
Pins 5, 9
0.20
(5.1)
2.30 (58.4)
1.90 (48.3)
B
1
9
M3 x 0.50
threaded insert
and standoff (4 places)
Screw length must
not go through Baseplate
2.00
(50.8)
2.40
(61.0)
0.015 minimum
clearance between
standoffs and
highest component
Do not remove
M3 x 0.50
threaded inserts
from bottom PCB
Baseplate
0.40
(10.2)
0.18
(4.6)
A
0.040 ± 0.001 (1.016 ±0.025)
0.080 ± 0.001 (2.032 ±0.025)
0.18
(4.6)
1.900
(48.26)
2
8
Case C61
7
3
6
0.400
(10.16)
4
5
0.50
(12.70)
Bottom View
B
0.700
(17.78)
1.000
(25.40)
1.400
(35.56)
2.40
(60.96)
UCH with Optional Baseplate
Standard pin length is shown. Please refer to the Part Number Structure
for special order pin lengths.
INPUT/OUTPUT CONNECTIONS
Pin
Function P17
1
−Input
2
Case
3
On/Off Control
4
+Input
5
+Output
6
+Sense
7
Trim
8
−Sense
9
−Output
Pin 2 may be removed under special order.
The case pin 2 is normally only used in
combination with the baseplate. Please
contact Murata Power Solutions.
Dimensions are in inches (mm) shown for ref. only.
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