LSN10A-D12 Datasheet, PDF (3/12 Pages) Murata Manufacturing Co., Ltd. – Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DCs in SIP Packages

LSN-10A D12 Models
Performance/Functional Specifications
Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages
Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. ~
Input
Absolute Maximum Ratings
Input Voltage Range
Input Current:
Normal Operating Conditions
Inrush Transient
Standby/Off Mode
Output Short-Circuit Condition 
Input Reflected Ripple Current 
Input Filter Type
Overvoltage Protection
10.8-13.2 Volts (12V nominal)
See Ordering Guide
0.08A²sec
8mA
40mA average
100mAp-p
Capacitive (66μF)
None
Input Voltage:
Continuous or transient
On/Off Control (Pin 11)
Input Reverse-Polarity Protection
Output Overvoltage Protection
Output Current
15 Volts
+VIN
None
None
Current limited. Devices can
withstand sustained output short
circuits without damage.
Reverse-Polarity Protection
None
Storage Temperature
–40 to +125°C
Undervoltage Shutdown
On/Off Control €
VOUT Accuracy (50% load)
None
On = open (internal pull-down)
Off = +2.8V to +VIN (<3mA)
Output
±1.25% maximum
Lead Temperature (soldering, 10 sec.) +300°C
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifications Table is not implied.
TECHNICAL NOTES
Minimum Loading ~
No load
Return Current Paths
Maximum Capacitive Load
VOUT Trim Range 
Ripple/Noise (20MHz BW) ~
Total Accuracy
Efficiency 
2000μF (low ESR, OSCON)
±10%
See Ordering Guide
3% over line/load/temperature
See Ordering Guide
The LSN D12 SIP’s are non-isolated DC/DC converters. Their two Common
pins (pins 5 and 6) are connected to each other internally (see Figure 1). To
the extent possible (with the intent of minimizing ground loops), input return
current should be directed through pin 6 (also referred to as –Input or Input
Return), and output return current should be directed through pin 5 (also
Overcurrent Detection and Short-Circuit Protection: 
Current-Limiting Detection Point
17 (13-23.5) Amps
Short-Circuit Detection Point
98% of VOUT set
SC Protection Technique
Hiccup with auto recovery
Short-Circuit Current
400mA average
Dynamic Characteristics
Transient Response (50% load step) 100μsec to ±2% of final value
Start-Up Time: 
VIN to VOUT and On/Off to VOUT
70msec for VOUT = 1V
16msec for VOUT = 1.1V to 5V
referred to as –Output or Output Return). Any on/off control signals applied to
pin 11 (On/Off Control) should be referenced to Common
(specifically pin 6).
I/O Filtering and Noise Reduction
All models in the LSN D12 Series are tested and specified with external
22μF tantalum input and output capacitors. These capacitors are necessary
to accommodate our test equipment and may not be required to achieve?
desired performance in your application. The LSN D12's are designed with
Switching Frequency:
1V/1.1V, 1.2V, 1.3 Models
1.5V/1.8V, 2V Models
2.5V, 3.3V, 5V Models
105/125kHz ±10%
160/177kHz ±10%
200kHz ±7.5%
high-quality, high-performance internal I/O caps, and will operate within spec
in most applications with no additional external components.
In particular, the LSN D12's input capacitors are specified for low ESR
Environmental
Calculated MTBF ‚
2.3 -1.8 million hours (1VOUT to 5VOUT)
Operating Temperature: (Ambient) 
Without Derating (Natural convection) –40 to +48/64°C (model dependent)
With Derating
See Derating Curves
Thermal Shutdown
+115°C
Dimensions
Pin Dimensions/Material
Weight
Flamability Rating
Safety
Physical
See Mechanical Specifications
0.03" (0.76mm) round copper alloy with
tin plate over nickel underplate
0.3 ounces (8.5g)
UL94V-0
UL/cUL/IEC/EN 60950, CSA-C22.2 No. 234
~ All models are tested/specified with external 22μF input/output capacitors.These caps
accommodate our test equipment and may not be required to achieve specified performance
in your applications. All models are stable and regulate within spec under no-load conditions.
 See Technical Notes and Performance Curves for details.
€ The On/Off Control (pin 11) is designed to be driven with open-collector logic or the appli-
cation of appropriate voltages (referenced to Common, pins 5 and 6).
 Output noise may be further reduced with the installation of additional external output
filtering. See I/O Filtering and Noise Reduction.
‚ MTBF’s are calculated using Telcordia SR-332(Bellcore), ground fixed, TA = +25°C, full
power, natural convection, +67°C pcb temperature.
and are fully rated to handle the units' input ripple currents. Similarly, the
internal output capacitors are specified 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.
In critical applications, input/output ripple/noise may be further reduced using
filtering techniques, the simplest being the installation of external I/O caps.
External input capacitors serve primarily as energy-storage devices. They
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 appropriate 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 impedances can greatly affect system stability. Your specific system
configuration may necessitate additional considerations.
Output ripple/noise (also referred to as periodic and random deviations or
PARD) may be reduced below specified limits with the installation of addi-
tional external output capacitors. Output capacitors function as true filter
www.murata-ps.com
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