![](http://datasheet.mmic.net.cn/30000/LQN-2-50-D12H-C_datasheet_2344636/LQN-2-50-D12H-C_2.png)
Typical at Ta = +25°C under nominal line voltage and full-load conditions, unless
otherwise noted. All models are tested and specified with external 33F input
capacitor and 470F poscap output capacitor paralleled with a 100F ceramic
output capacitor.
Ripple/Noise (R/N) is tested/specified over a 20MHz bandwidth.
These devices have no minimum-load requirements and will regulate under no-
load conditions. Regulation specifications describe the output-voltage deviation as
the line voltage or load is varied from its nominal/midpoint value to either extreme.
Nominal line voltage, no-load/full-load conditions.
The operating input voltage is 10.2V to 13.8V. However, 10.8Vin is required for the
DC/DC to properly start up under all line, load and temperature conditions. The 10.8V
potential must be maintained across the inputs until the output is up and regulating.
After the output is regulating, the operating input range is 10.2V to 13.8V.
Please see part number structure for full part numbers and additional options.
1
2
3
10
7
6
9
8
5
4
0.110 TYP.
(2.8)
0.125 TYP.
(3.2)
COPPER SMT LEADS
COPLANAR TO 0.004
0.025
(0.6)
2.22 (56.4)
A
1.35
(34.3)
0.600 (15.24)
4 EQ. SP. @ 0.150 (3.81)
BOTTOM VIEW
A
B
2.30 (58.4)
0.44*
(11.2)
*0.50 (11.2) WITH THE ADDITION
OF OPTIONAL HEATSINK OR BASEPLATE.
0.79 (20.1) WITH HEAT SHIELD.
1.35
(34.3)
0.600 (15.24)
4 EQ. SP. @ 0.150 (3.81)
2.00 (50.8)
BOTTOM VIEW
1
2
3
10
7
6
9
8
5
4
A
B
2.22 (56.4)
0.44*
(11.2)
0.122
(3.1)
0.180 MIN.
(4.6)
PINS 2-4, 10:
0.040 ±0.001
(1.016 ±0.025)
PINS 1, 5-9:
0.062 ±0.001
(1.575 ±0.025)
PLASTIC STANDOFFS
ARE RELIEVED 0.030 (0.8)
IN SOLDER JOINT AREA
*0.50 (12.7) WITH THE ADDITION
OF OPTIONAL HEATSINK OR BASEPLATE
C41 Through-Hole Package
C42 Surface-Mount Package
*A "Power Good" output
is available on pin 3 under
special order.
Contact Murata Power
Solutions.
See page 12 for LQN Series baseplate, heat sink,
and heat shield mechanical specifications.
Performance Specifications and Ordering Guide
Models
Output
Input
Efficiency
Package
(Case, Pinout)
Vout
(Volts)
Iout
(Amps)
R/N (mVp-p)
Regulation (Max.)
Vin Nom.
(Volts)
Range
(Volts)
Iin
(mA/A)
Typ.
Max.
Line
Load
Min.
Typ.
LQN-0.8/50-D12-C
0.8
50
30
50
±0.25%
12
10.2–3.8
240/3.92
82%
85%
C41, C42, P62
LQN-1/50-D12-C
1
50
30
50
±0.25%
12
10.2–3.8
240/4.84
80%
86%
C41, C42, P62
LQN-1.2/50-D12-C
1.2
50
20
50
±0.25%
12
10.2–3.8
240/5.59
87%
89.5%
C41, C42, P62
LQN-1.5/50-D12-C
1.5
50
20
50
±0.25%
12
10.2–3.8
240/6.87
88.5%
91%
C41, C42, P62
LQN-1.8/50-D12-C
1.8
50
20
50
±0.25%
12
10.2–3.8
240/8.24
88.5%
91%
C41, C42, P62
LQN-2/50-D12-C
2
50
20
50
±0.25%
12
10.2–3.8
240/9.16
88.5%
91%
C41, C42, P62
LQN-2.5/45-D12-C
2.5
45
20
50
±0.25%
12
10.2–3.8
240/10.14
90%
92.5%
C41, C42, P62
LQN-3.3/45-D12-C
3.3
45
30
50
±0.25%
12
10.2–3.8
240/13.38
90%
92.5%
C41, C42, P62
LQN-5/45-D12-C
5
45
20
40
±0.05%
12
10.2–3.8
240/20.05
94%
95%
C41, C42, P62
Pin
Function P62
Pin
Function P62
1
Input Common
6
Output Common
2
Vout Trim
7
+Output
3
N.C.*
8
Output Common
4
Off/On Control
9
+Output
5
+Input
10
+Sense In
I/O Connections
MECHANICAL SPECIFICATIONS
Third Angle Projection
Dimensions are in inches (mm shown for ref. only).
Components are shown for reference only.
Tolerances (unless otherwise specied):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
www.murata-ps.com
MDC_LQN D12 Models.B03 Page 2 of 14
LQN D12 Models
Non-Isolated, Single Output, 12Vin, 0.8-5Vout
45-50 Amp, -Brick, DC/DC Converters