LSN16A-W3 Datasheet, PDF (3/8 Pages) Murata Manufacturing Co., Ltd. – Non-Isolated, 3-5.5VIN, 0.75-3.3VOUT 16 Amp DC/DC Converters

Single Output LSN-W3 Models
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. ~
Input
Input Voltage Range
3-5.5 Volts (5V nominal) …
Input Current:
Normal Operating Conditions
Inrush Transient
Standby/Off Mode
Output Short-Circuit Condition 
Input Reflected Ripple Current ƒ
Input Filter Type
Overvoltage Protection
Reverse-Polarity Protection
Undervoltage Shutdown
On/Off Control €
See Ordering Guide
0.02A² sec
8mA
60-110mA average (model dependent)
10-20mAp-p, model dependent
Capacitive
None
None
None
On = open or low (<0.4V max.)
Off = high (>2.5V to VIN max.), 1mA
Output
VOUT Accuracy (50% load)
±1.5% „
Temperature Coefficient
±0.02%/°C
Minimum Loading ~
No load
Maximum Capacitive Load
5000μF (electrolytic),
2000μF (0.027 ESR, OSCON)
VOUT Trim Range
±10%
Ripple/Noise (20MHz BW) ~ See Ordering Guide
Total Accuracy
3% over line/load/temperature
Efficiency
See Ordering Guide
Overcurrent Detection and Short-Circuit Protection: 
Current-Limiting Detection Point
20-36 Amps (model dependent)
Short-Circuit Detection Point
98% of VOUT set
SC Protection Technique
Hiccup with auto recovery
Short-Circuit Current
600mA average
Dynamic Characteristics
Transient Response (50% load step)
Start-Up Time: 
VIN to VOUT and On/Off to VOUT
Switching Frequency
30-70μsec to ±2% of final value
(model dependent)
7msec
300 ±50kHz
Environmental
Calculated MTBF ‚
TBD
Operating Temperature: (Ambient) 
Without Derating (Natural convection) –40 to +63/71°C (model dependent,
see Derating Curves)
With Derating
See Derating Curves
PC-Board Temperature
+100°C maximum
Thermal Shutdown
+115°C (110 to 125°C)
Dimensions
Pin Dimensions/Material
Weight
Flamability Rating
EMI Conducted and Radiated
Safety
Physical
See Mechanical Specifications
0.112" x 0.062" (2.84 x 1.57mm) rectangular
tellurium copper alloy with 100-300
microinches of tin electroplate over
100 microinches of nickel underplate
0.28 ounces (7.8g)
UL94V-0
FCC Part 15, EN55022 Class B may
require external filter
UL/cUL/IEC/EN 60950-1, CSA-C22.2 No.234
~ All models are tested/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
specified performance in your applications. All models are stable and regulate within spec under
no-load conditions.
Non-Isolated, 3-5.5VIN, 0.75-3.3VOUT
16 Amp DC/DC Converters
 See Technical Notes and Performance Curves for details.
€ The On/Off Control is designed to be driven with open-collector logic or the application of appropriate
voltages (referenced to Common, pin 3). Applying a voltage to On/Off Control when no input voltage is
applied to the converter may cause permanent damage.
 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.
ƒ Input Ripple Current is tested/specified over a 5-20MHz bandwidth with an external 2 x 100μF input
capacitor and a simulated source impedance of 1000μF and 1μH. See I/O Filtering, Input Ripple
Current, and Output Noise for details.
„ Setting accuracy for LSN-T/16-W3 is ±2%.
… Input voltage must be 4.5V minimum for 3.3V output.
Absolute Maximum Ratings
Input Voltage:
Continuous or transient
On/Off Control (Pin 1)
Input Reverse-Polarity Protection
Output Overvoltage Protection
Output Current
Storage Temperature
Lead Temperature
6 Volts (0.75, 1, 1.2, 1.5, 1.8, 2, 2.5 VOUT)
7 Volts (3.3VOUT and "T" models)
+VIN
None
None
Current limited. Devices can withstand
sustained output short circuits without
damage.
–40 to +125°C
See Reflow Solder Profile
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
I/O Filtering and Noise Reduction
All models in the LSN W3 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’s are designed with high-quality,
high-performance internal I/O caps, and will operate within spec in most appli-
cations with no additional external components.
In particular, the LSN’s input capacitors are specified for low ESR 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.
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 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 specific system configuration
may necessitate additional considerations.
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
MDC_LSN W3 Models.A01 Page 3 of 8