®
LSN2 Series
Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters
(1)
Performance/Functional Specifications
Short Circuit Duration
Continuous, no damage (output shorted
to ground)
INPUT
(16)
Prebias Startup
Converter will start up if the external
output voltage is less than VNOM
Input Voltage Range
Isolation
See Ordering Guide
Not isolated, input and output commons
are internally connected
Sequencing
Slew Rate
2V max. per millisecond
10 milliseconds
VOUT = 100mV of Sequence In
VOUT = 200mV of Sequence In
400kΩ to 1MΩ
Start-Up Threshold
W3 Models
12V Models
Startup delay until sequence start
Tracking accuracy, rising input
Tracking accuracy, falling input
Sequence pin input impedance
2.2 Volts
8 Volts
Undervoltage Shutdown
W3 Models
12V Models
2.0 Volts
7.5 Volts
(7)
Remote Sense to VOUT
(14)
0.5V max.
Power Good Output
TRUE (OK) = open drain
Overvoltage Shutdown
None
(“G” suffix)
FALSE (not OK) = Signal Ground to 0.4V
MOSFET to ground with external user
pullup, 10mA max. sink
(2)
Reflected (Back) Ripple Current
Internal Input Filter Type
Reverse Polarity Protection
10-70mAp-p (model dependent)
Capacitive
Power_Good Configuration
DYNAMIC CHARACTERISTICS
See fuse information
Dynamic Load Response
(50-100-50% load step, di/dt = 20A/msec)
25ꢀsec to 2% of final value
4-7msec for VOUT = nominal
Input Current:
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output Short Circuit
No Load
See Ordering Guide
0.1A2sec
5mA
Start-Up Time
(VIN on to VOUT regulated or On/Off to VOUT)
60mA
Switching Frequency
LSN2-T/6 models
LSN2-T/10 and -T/16 models
315kHz
230kHz
W3 models
12V models
50mA
100mA
ENVIRONMENTAL
Low Line (VIN = VMIN)
LSN2-T/6-W3
5.54 Amps
3.85 Amps
9.14 Amps
6.31 Amps
14.63 Amps
10.2 Amps
(4)
Calculated MTBF
TBC Hours
LSN2-T/6-D12
LSN2-T/10-W3
LSN2-T/10-D12
LSN2-T/16-W3
LSN2-T/16-D12
Operating Temperature Range (Ambient)
No derating, natural convection
With derating
(9)
–40 to +63°C, vertical mount, 2.5VOUT
See Derating Curves
(12)
Operating PC Board Temperature
Storage Temperature Range
Thermal Protection/Shutdown
Density Altitude
–40 to +100°C max.
(5)
–55 to +125°C
Remote On/Off Control:
Positive Logic (no model suffix)
OFF = ground pin to +0.8V max.
ON = open pin or +2.5V min. to +VIN max.
ON = open pin to +0.3V max.
OFF = +2.5V min. to +VIN max.
1mA max.
+115°C
0 to 10,000 feet
10% to 90%, non-condensing
Negative Logic (“N” model suffix)
Relative Humidity
Current
PHYSICAL
OUTPUT
Outline Dimensions
Removable Heat Shield
Weight
See Mechanical Specifications
Nylon 46
Voltage Output Range
Minimum Loading
See Ordering Guide
No minimum load
2% of VNOM
0.28 ounces (7.8 grams)
Accuracy (50% load)
Electromagnetic Interference
(conducted and radiated)
FCC part 15, class B, EN55022 (may
need external filter)
(13)
Voltage Adjustment Range
Temperature Coefficient
See Ordering Guide
0.02% of VOUT range per °C
(8)
Safety
UL/cUL 60950 CSA-C22.2 No.234
IEC/EN 60950
Ripple/Noise (20 MHz bandwidth)
Line/Load Regulation (See Tech Notes)
Efficiency
See Ordering Guide and
Flammability Rating
UL94V-0
(10)
See Ordering Guide and
See Ordering Guide
ABSOLUTE MAXIMUM RATINGS
(15)
Maximum Capacitive Loading:
LSN2-T/6 models:
Cap-ESR = 0.001 to 0.01Ω
Cap-ESR >0.01Ω
Input Voltage (Continuous or transient)
W3 models
12V models
3000ꢀF
5000ꢀF
+7 Volts
+15 Volts
LSN2-T/10 and -T/16 models:
Cap-ESR = 0.001 to 0.01Ω
Cap-ESR >0.01Ω
On/Off Control
–0.3V min. to +VIN max.
See Fuse section
5000ꢀF
10,000ꢀF
Input Reverse Polarity Protection
Output Current (7)
Current-limited. Devices can
withstand sustained short circuit
without damage.
Current Limit Inception: (98% of VOUT)
LSN2-T/6 models
11-13 Amps (cold startup)
11 Amps (after warm up)
18.75 Amps (cold startup)
16.75 Amps (after warm up)
24 Amps (cold startup)
Storage Temperature
–55 to +125°C
LSN2-T/10 models
LSN2-T/16 models
Lead Temperature (soldering 10 sec. max.) +280°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 Perfor-
mance/Functional Specifications Table is not implied.
21 Amps (after warm up)
(6)
Short Circuit Mode
Short Circuit Current Output
600mA
(17)
Protection Method
Hiccup autorecovery on overload removal
LSN2 Series Page 3 of 14
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