LSN-5/16-D12-C Murata Power Solutions Inc, LSN-5/16-D12-C Datasheet - Page 5

• Manufacturer Part Number: LSN-5/16-D12-C
• Description: DC/DC Converter
• Manufacturer: Murata Power Solutions Inc
• Series: LSNr

Specifications of LSN-5/16-D12-C

• Dc / Dc Converter O/p Type: Fixed
• No. Of Outputs: 1
• Input Voltage: 10V To 14V
• Power Rating: 80W
• Output Voltage: 5V
• Output Current: 16mA
• Supply Voltage: 12V
• Dc / Dc Converter Case Style: SIP
• Product: Non-Isolated / POL
• Output Power: 80 W
• Input Voltage Range: 10 V to 14 V
• Input Voltage (nominal): 12 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 5 V
• Output Current (channel 1): 16 A
• Package / Case Size: SIP
• Output Type: Low Voltage Reversed Pin
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

high-performance internal I/O caps, and will operate within spec in most appli-
cations with no additional external components.
are fully rated to handle the units' input ripple currents. Similarly, the internal
output capacitors are specifi ed for low ESR and full-range frequency response.
As shown in the Performance Curves, removal of the external 22μF tantalum
output caps has minimal effect on output noise.
fi ltering techniques, the simplest being the installation of external I/O caps.
minimize high-frequency variations in input voltage (usually caused by IR drops
in conductors leading to the DC/DC) as the switching converter draws pulses of
current. Input capacitors should be selected for bulk capacitance (at appropri-
ate frequencies), low ESR, and high rms-ripple-current ratings. The switching
nature of modern DC/DC's requires that the dc input voltage source have low
ac impedance at the frequencies of interest. Highly inductive source imped-
ances can greatly affect system stability. Your specifi c system confi guration
may necessitate additional considerations.
PARD) may be reduced below specifi ed limits with the installation of additional
external output capacitors. Output capacitors function as true fi lter elements
and should be selected for bulk capacitance, low ESR, and appropriate fre-
quency response. Any scope measurements of PARD should be made directly
at the DC/DC output pins with scope probe ground less than 0.5" in length.
located as close to the converters as possible. Temperature variations for all
relevant parameters should be taken into consideration.
tion of your line voltage and source impedance, as well as your particular load
and layout conditions. Our Applications Engineers can recommend potential
solutions and discuss the possibility of our modifying a given device’s internal
fi ltering to meet your specifi c requirements. Contact our Applications Engineer-
ing Group for additional details.
Input Fusing
Most applications and or safety agencies require the installation of fuses at the
inputs of power conversion components. LSN D12 Series DC/DC converters are
not internally fused. Therefore, if input fusing is mandatory, either a normal-
blow or a slow-blow fuse with a value no greater than 20 Amps should be
installed within the ungrounded input path to the converter.
slow-blow fuse with a typical value of about twice the maximum input current,
calculated at low line with the converters minimum effi ciency.
Safety Considerations
LSN D12 SIP's are non-isolated DC/DC converters. In general, all DC/DC’s must
be installed, including considerations for I/O voltages and spacing/separation
requirements, in compliance with relevant safety-agency specifi cations (usually
UL/IEC/EN60950-1).
In particular, the LSN D12's input capacitors are specifi ed for low ESR and
In critical applications, input/output ripple/noise may be further reduced using
External input capacitors serve primarily as energy-storage devices. They
Output ripple/noise (also referred to as periodic and random deviations or
All external capacitors should have appropriate voltage ratings and be
The most effective combination of external I/O capacitors will be a func-
As a rule of thumb however, we recommend to use a normal-blow or
www.murata-ps.com
(safety extra low voltage) requirements, its input must be SELV compliant. If the
output needs to be ELV (extra low voltage), the input must be ELV.
Input Overvoltage and Reverse-Polarity Protection
LSN D12 SIP Series DC/DC’s do not incorporate either input overvoltage or
input reverse-polarity protection. Input voltages in excess of the specifi ed
absolute maximum ratings and input polarity reversals of longer than “instan-
taneous” duration can cause permanent damage to these devices.
Start-Up Time
The V
ing input voltage crosses the lower limit of the specifi ed input voltage range
(10 Volts) and the fully loaded output voltage enters and remains within its
specifi ed accuracy band. Actual measured times will vary with input source
impedance, external input capacitance, and the slew rate and fi nal value of the
input voltage as it appears to the converter.
On/Off Control with the nominal input voltage already applied to the converter.
The specifi cation defi nes the interval between the time at which the converter
is turned on and the fully loaded output voltage enters and remains within its
specifi ed accuracy band. See Typical Performance Curves.
Remote Sense
LSN D12 SIP Series DC/DC converters offer an output sense function on pin 3.
The sense function enables point-of-use regulation for overcoming moderate
IR drops in conductors and/or cabling. Since these are non-isolated devices
whose inputs and outputs usually share the same ground plane, sense is
provided only for the +Output.
DC/DC converter’s output. The sense line carries very little current and conse-
quently requires a minimal cross-sectional-area conductor. As such, it is not
a low-impedance point and must be treated with care in layout and cabling.
Sense lines should be run adjacent to signals (preferably ground), and in cable
and/or discrete-wiring applications, twisted-pair or similar techniques should be
used. To prevent high frequency voltage differences between V
we recommend installation of a 1000pF capacitor close to the converter.
the +Output and +Sense pins that do not exceed 10% of V
rent and voltage at the converter's output pins. Use of trim and sense functions
can cause the output voltage to increase, thereby increasing output power
beyond the LSN's specifi ed rating. Therefore:
serves to protect the sense function by limiting the output current fl owing
through the sense line if the main output is disconnected. It also prevents
output voltage runaway if the sense connection is disconnected.
converter pins, if the sense function is not used for remote regulation.
In particular, for a non-isolated converter's output voltage to meet SELV
The On/Off to V
The remote sense line is part of the feedback control loop regulating the
The sense function is capable of compensating for voltage drops between
Power derating (output current limiting) is based upon maximum output cur-
The internal 10.5Ω resistor between +Sense and +Output (see Figure 1)
Note: Connect the +Sense pin (pin 3) to +Output (pin 4) at the DC/DC
IN
[V
(V
to V
OUT
OUT
OUT
(+) – Common] – [Sense(+) – Common] ≤ 10%V
Single Output, Non-Isolated, 12V
at pins) x (I
Start-Up Time is the interval between the time at which a ramp-
OUT
Technical enquiries email: [e-mail], tel:
Start-Up Time assumes the converter is turned off via the
OUT
LSN-16A D12 Models
) ≤ rated output power
16 Amp in DC/DCs SIP Packages
MDC_LSN 16A D12 Models.B03 Page 5 of 13
OUT
IN
OUT
.
, 0.75-5V
OUT
[phone]
and Sense,
OUT